Squirrely steering on a very lightly modified Jeep like yours is usually nothing more than overinflated tires, possibly combined with an improper toe-in setting. Your 32" tires should have no more than 27 psi in them when the Jeep is lightly loaded, or 29 psi when the Jeep is fully loaded with gear or people. My bet is a clueless tire shop guy overinflated them to no less than 35 psi. And pay NO attention to the air pressure molded onto the sidewall of any car or truck tire. That pressure is only its maximum safe air pressure, not its actual recommended street pressure which varies by the weight of the vehicle it is mounted on.
Check its toe-in setting too. Even a short suspension lift will increase the toe-in more than what the factory recommends. If you have a wrench, tape measure, and big set of pliers, you can set your own toe-in. Using the directions at
http://www.4x4xplor.com/alignment.html just rotate the tie-rod until the fronts of the tires are 1/16" to 1/8" closer together than in the rear.
2" spacers are WAY excessive, I'd never recommend that much of a spacer. At the most 1" is more than enough for 32x11.50 tires when mounted on the factory wheels. But since you have aftermarket wheels, you don't even need spacers. Those wheels have reduced backspacing so they'll position the tires out further just enough so they'll clear. In other words, get rid of those spacers entirely.