Sounds like a broken ignition actuator pin, pretty common unfortunately.
If it is, the bad news is you aren't going anywhere and jeep will want around $1500 for a new steering column.
The good news is you can get an aftermarket replacement (I got a dorman products one) and fit it yourself.
I'll dig up the instruction video and link it, you can then pull it out and see if it has indeed snapped.
Edit: according to this you can still get it started:
http://www.jeepkj.com/forum/f196/how...gnition-51549/
"If you are stranded you can get the Jeep going by removing the ignition switch....the electrical unit....off from the actuator. So you will need the two Torx bits.
Then with the normal key turned in the ignition barrel to unlock the steering wheel and to enable the SKIM security system if fitted....use a small flat screwdriver to turn the ignition switch to Start.
The thin sliver of plastic going down the center of the actuator pin is there to enable the BCM to "beep" at you when you leave the key in the ignition after turning Off...it serves no other purpose!"