can't keep it on the road

How bad was the accident? Its possible that if it was bad you bent your frame (hope that didnt happen) Theres a high posibility that your suspension components got messed up in the accident. I dont see how not having a rear swaybar would cause that much of a problem.

For starters, I would go to the fronts, jack it up so the tires a couple inches in the air and check for slop ....grab the tire at 12 and 6, trying moving it in that plane....grab 9 and 3 and repeat....that would give indications of bad ball joints and even tie-rod ends.....stick a 4 ft bar under the tire and lift up....any slop in there??

check the steering rack, its right smack in the middle of the front end...are the bushings there? any fluid leaking around it? Is it loose?? Have someone turn the wheel while you watch the rack/tie-rods go thru there motions...give it a good look see...I for one wouldn't be traversing at high speeds with that puppy...sounds spooky to me...Musta creamed something in the accident...Time to dig around some or get it to a shop...