Just pull harder. But with a careful and steady force. If you yank it, you're liable to break the tiny metal contact prongs. Just grab the tab in the center and wiggle it a bit up and down, side to side, while pulling out. If you haven't even taken the bulb out before, the rubber o-ring that seals the holder can stick a bit.
Last edited by stopper; 01-04-2013 at 10:56 PM.