When the ignition key won't come out of the ignition, it is possible that the steering lock is keeping it from coming out. At such times, have you tried banging the steering wheel in each direction while trying to pull the key out?

Also, the next time you do get it out, get one of those little squirt tubes of graphite lock lubricant and squirt the hell out of it. (Don't forget to clean it up afterward, and tell you wife about it, so she doesn't get graphite over her good clothess.)

1977 CJ-7, fiberglass body, AMC 360 w/ headers, DUI ignition, Edelbrock intake and Holley 4150 carb, TF999, Dana 300, 4.56 gears lockers, York air comp, 4" susp lift, 2" body lift, BFG 35" M-T tires, Megashifter, AGR pump & box, REP8000 winch.