If you can turn a wrench at all, you can do your own alignment. The cambor is non adjustable and I'm sure you didn't affect the castor and that leaves only the toe-in. That is easy to check and adjust. The same with centering the steering wheel. It's an easy adjustment. Being pulled out sideways might have bent the tierod if it was tight enough that you couldn't steer. You can check that when you measure the toe-in. That would explain the shaking and the steering wheel being off center. Did you check to see if there is a chunk of ice on the inside of a wheel??
1997 ZJ..... still building and getting there
1997 TJ, Stretched, 1 tons, 42" Pitbulls, 350,