You don't need to take the whole headlamp unit out to change globes. They use a bayonet type fitting in there, just twist the visible part (plastic right angle where the wiring plugs in) of the globe and it'll come out.
Mine were pretty tight the first time i tried them. I ended up unscrewing the socket of the globe holder (there's screws in there, 3 i think), then I realised how easy it actually is

. It's pretty tight for space, your right, but trust me they'll come out easy. Just remember not to touch the glass part of the globe either.