Need help from the suspension gurus here!

I don't know if it is contributing or would fix your problem but there is no way on Gods green earth that I wouldn't be running double adjustable shocks all the way around and at a minimum at least on the back......if the tire sticks then spins or unloads and rehooks again my first thought......obviously haven't seen a video.....but by your description is that the compression is too soft in the rear and is letting the tire rebound after the hit.
I understand the recommendation for double adjustable on all four corners. I'll probably look into that as this winters project. But for now, with the Competition Engineering single adjustables on the rear, does the adjustment affect compression or rebound?