While waiting for the printer to print something, I got bored and started poking around at the server rack that housed our stuff. There's a lock on it, but since we need physical access to the servers, the door's kept unlocked. But I noticed that the hinges were spring loaded and could easily be pushed up to unhinge the door.
So I discovered to my amusement that I could use the snap-hook my keys are on to reach in and lift the hinge pin, thereby bypassing the lock completely.
Have pictures of hinge. Will post later. Am lazy / need to cram for exam in 6 hours.