death wobble is very common with worn control arm bushings. Also it's common for the track bar bolt to come loose or for the mounting bracket on the "frame" side to break.
before doing anything take a spin through here for the best free help available for anything jeep related. Read thru the posts and/or join the forum and post a question
http://www.jeepforum.com/forum/f310/
http://www.jeepforum.com/forum/f115/