Step 1 on any torsion bar alignment is ride height. If the shop screwed with that, it could be part of the issue. With a swaybar, adjusting one side will also affect the other - it's very important to make the ride height adjustment with the bar disconnected. I could see an inexperienced shop skipping that step.
Raising the front end can help increase caster and stability to some degree too. If the incompetent shop lowered the front, it could be compounding your issue.
If you reset your own wheel, it's possible the toe is slightly off. Shouldn't be with equal adjustments per side, but I've seen stranger things. Lengthening each adjustment sleeve a 1/4-1/2 turn and seeing if your situation improves might not be a bad idea. It's what I'd do, but I rarely have to drive 70mph these days.