Bad strut rod bushings?

Were the brakes operating well before you went off road?
If they were then it's probable the accident has damaged something.

Just a little background...drum brakes are self-energizing and can be tricky to get right. Contamination on shoes from brake fluid or rear axle lube can cause them to grab. Usually by locking that particular tire up. Disc brakes are much more forgiving. One of the weak points of 9" drums, other than being on the small side, is that the lower ball joint is also smaller with smaller attaching bolts. 10" drums and discs use a larger lower ball joint. Oh, a small point, but drum brakes have shoes, and disc brskes have pads.

But you said it's pulling on acceleration too. It's possible that the combination of bad LCA and strut rod bushings is enough to allow the LCA to move fore and aft, in effect steering the car. The suggestion that Dana made in post #4 is a good one except maybe put a block in front of and behind the right front tire.

It looks like the general consensus is that the LCA and strut rod bushings should be replaced. It's curious that the alignment tech didn't mention that with 2 alignments.

Of all the components in a front end rebuild, the LCA bush is the most difficult. Unless you have a press, you'll have to take the LCAs somewhere to have them pressed in and out. Carefully inspect the LCA sockets in the K frame as they are prone to cracking and wear. It's the weakest part of old K frames. Make sure the idler arm is in good shape too.

Good luck!