If it's a competent shop you should have been given a print out of before, specs, and after adjustments, tracking, wheel base, etc.
From the sounds of it caster could still be too negative, which will make it wonder all over the place. And it shouldn't vibrate like that making a turn in one direction.
I'd first get a hold of who ever is in charge of the shop and let em know what is going on, and give em a chance to remedy it. If they can't, do as suggested and take it to a shop that specializes in off road and lifts. And if they are able to correct it, and it's not something you did, take the receipt back to the first shop and get your money back.
97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.