I have a number of personal spaces that are not being used. I don't want to delete the spaces yet, but I don't want the users who created them (or anyone else) to be able to view or administer them. I set the Group permissions to allow confluence-administrators to have full control. Then I deselect all permissions for the user who created the space. When I click the "Save All" button, the user remains with full permissions to the space. Is there any way to remove a user's permissions to the space he created?