To unlock a folder without having to reboot, try this.. Prevent the folder from locking in the first place by separating it from the bad app. Run your apps from the home page, not from the folder. Move the app to the home page first. After running it, move it back to the folder. Easy. Open the folder, touch the app widget, hold, and move it to the home page. The folder will revert to a widget. Run the app widget from outside the folder. Touch, hold, and drop the widget onto the folder widget to put it back. Last widget in is in the last position in the folder. Folders are really good to group apps. They're only one level deep and seem to be a bit lame as in the above problem. They are better to use than slogging through the entire app collection where a flick can sometimes launch something unwanted. This is a stupid workaround that needs to be addressed by the op system software group.