Well it that's the case: then my suggestion is completely stupid (although if the OP was to follow my 'advice', it would possibly have at least some comedy value). :thumbsup:
Well if it is designed to come out of the fitting, I'd spray the bottom part of the bulb with contact cleaner; let it do it's stuff for 5 minutes; then give the bulb a side-to-side tug/pull with a pair of pliers.