diff --git a/gen/mixins/ToolMixin.py b/gen/mixins/ToolMixin.py
index 558de41..3999346 100644
--- a/gen/mixins/ToolMixin.py
+++ b/gen/mixins/ToolMixin.py
@@ -19,7 +19,7 @@ except ImportError:
 
 # Errors -----------------------------------------------------------------------
 jsMessages = ('no_elem_selected', 'delete_confirm', 'unlink_confirm',
-              'warn_leave_form')
+              'unlock_confirm', 'warn_leave_form')
 
 # ------------------------------------------------------------------------------
 class ToolMixin(BaseMixin):
diff --git a/gen/mixins/__init__.py b/gen/mixins/__init__.py
index 7646776..fa2986a 100644
--- a/gen/mixins/__init__.py
+++ b/gen/mixins/__init__.py
@@ -229,16 +229,20 @@ class BaseMixin:
         if hasattr(self.aq_base, 'locks') and (page in self.locks):
             if (user.getId() != self.locks[page][0]): return self.locks[page]
 
-    def removeLock(self, page):
-        '''Removes the lock on the current page. This happens after the page has
-           been saved: the lock must be released.'''
+    def removeLock(self, page, force=False):
+        '''Removes the lock on the current page. This happens:
+           - after the page has been saved: the lock must be released;
+           - or when an admin wants to force the deletion of a lock that was
+             left on p_page for too long (p_force=True).
+        '''
         if page not in self.locks: return
         # Raise an error if the user that saves changes is not the one that
-        # has locked the page.
-        userId = self.getUser().getId()
-        if self.locks[page][0] != userId:
-            from AccessControl import Unauthorized
-            raise Unauthorized('This page was locked by someone else.')
+        # has locked the page (excepted if p_force is True)
+        if not force:
+            userId = self.getUser().getId()
+            if self.locks[page][0] != userId:
+                from AccessControl import Unauthorized
+                raise Unauthorized('This page was locked by someone else.')
         # Remove the lock
         del self.locks[page]
 
@@ -251,6 +255,17 @@ class BaseMixin:
            (user.getId() == self.locks[page][0]):
             del self.locks[page]
 
+    def onUnlock(self):
+        '''Called when an admin wants to remove a lock that was left for too
+           long by some user.'''
+        rq = self.REQUEST
+        tool = self.getTool()
+        obj = tool.getObject(rq['objectUid'])
+        obj.removeLock(rq['pageName'], force=True)
+        urlBack = self.getUrl(rq['HTTP_REFERER'])
+        self.say(self.translate('unlock_done'))
+        self.goto(urlBack)
+
     def onCreateWithoutForm(self):
         '''This method is called when a user wants to create a object from a
            reference field, automatically (without displaying a form).'''
diff --git a/gen/po.py b/gen/po.py
index 909aaf5..5df7308 100644
--- a/gen/po.py
+++ b/gen/po.py
@@ -73,10 +73,13 @@ appyLabels = [
  ('object_edit', 'Edit'),
  ('object_delete', 'Delete'),
  ('object_unlink', 'Unlink'),
+ ('page_unlock', 'Unlock'),
  ('delete_confirm', 'Are you sure you want to delete this element?'),
  ('unlink_confirm', 'Are you sure you want to unlink this element?'),
+ ('unlock_confirm', 'Are you sure you want to unlock this page?'),
  ('delete_done', 'The element has been deleted.'),
  ('unlink_done', 'The element has been unlinked.'),
+ ('unlock_done', 'The page has been unlocked.'),
  ('goto_first', 'Go to top'),
  ('goto_previous', 'Go to previous'),
  ('goto_next', 'Go to next'),
diff --git a/gen/ui/appy.js b/gen/ui/appy.js
index 776adec..1b5eca1 100644
--- a/gen/ui/appy.js
+++ b/gen/ui/appy.js
@@ -403,6 +403,13 @@ function onUnlinkObject(sourceUid, fieldName, targetUid) {
   askConfirm('form', 'unlinkForm', unlink_confirm);
 }
 
+function onUnlockPage(objectUid, pageName) {
+  f = document.getElementById('unlockForm');
+  f.objectUid.value = objectUid;
+  f.pageName.value = pageName;
+  askConfirm('form', 'unlockForm', unlock_confirm);
+}
+
 function createCookie(name, value, days) {
   if (days) {
     var date = new Date();
diff --git a/gen/ui/page.pt b/gen/ui/page.pt
index c7737b4..860437d 100644
--- a/gen/ui/page.pt
+++ b/gen/ui/page.pt
@@ -31,6 +31,12 @@
     <input type="hidden" name="fieldName"/>
     <input type="hidden" name="targetUid"/>
   </form>
+  <tal:comment replace="nothing">Global form for unlocking a page</tal:comment>
+  <form id="unlockForm" method="post" action="do">
+    <input type="hidden" name="action" value="Unlock"/>
+    <input type="hidden" name="objectUid"/>
+    <input type="hidden" name="pageName"/>
+  </form>
   <tal:comment replace="nothing">Global form for generating a document from a pod template</tal:comment>
   <form id="podTemplateForm" name="podTemplateForm" method="post"
         tal:attributes="action python: tool.absolute_url() + '/generateDocument'">
diff --git a/gen/ui/portlet.pt b/gen/ui/portlet.pt
index 44c2a8e..190c8fc 100644
--- a/gen/ui/portlet.pt
+++ b/gen/ui/portlet.pt
@@ -163,8 +163,12 @@
             <img style="cursor: help"
                  tal:define="lockDate python: tool.formatDate(locked[1]);
                              lockMsg python: _('page_locked', mapping={'user':tool.getUserName(locked[0]), 'date': lockDate})"
-                 tal:attributes="src string: $appUrl/ui/locked.png; title lockMsg"/>
-           </a>
+                 tal:attributes="src string: $appUrl/ui/locked.png; title lockMsg"/></a>
+           <a tal:condition="python: editable and locked and user.has_role('Manager')">
+            <img style="cursor: pointer"
+                 tal:attributes="src string: $appUrl/ui/unlock.png;
+                                 title python: _('page_unlock');
+                                 onclick python: 'onUnlockPage(\'%s\',\'%s\')' % (contextObj.UID(), aPage)"/></a>
           </tal:icons>
         </div>
         <tal:comment replace="nothing">Next lines: links</tal:comment>
diff --git a/gen/ui/unlock.png b/gen/ui/unlock.png
new file mode 100644
index 0000000..8f1aeb8
Binary files /dev/null and b/gen/ui/unlock.png differ