C'mon Drulee, come on over to the "light" side!
As far as opening the case you do have a torch and crowbar, right?
OK, getting serious face on now... Quite often a ball of sticky duct tape wadded up sticky-side out, mashed against the case back, and turned CCW will get it off. If it is extremely, and unusually, tight then a case-back wrench might be required. 90%+ of the time the ball of tape will do it. Damn, Chi, beat me by THIS much...