Prostar driving problems

Hey guys I'm at a dead end here need help. Long story short I had a jacknife about 2 weeks ago bc of a car crashing on the highway in front of me and me not killing him or myself.. the truck has not run right since. I get a "skating feeling when running highway speeds around 55mph and can't go faster with out the fear of loosing control.. I got a alignment yesterday the front and back were off and got fixed. Went threw the frame and all bushings and everything is in great shape. Truck feels solid again BUT it's still slightly skating even when bob tailing I feel like something's pushing me side to side. Some one recommended getting my cab mount looked at would a bad mount cause that?

 

I've had it for a month.. I had 3 people drive the truck and they swear it runs fine and it's all in my head..

 

I'm seeing my rear putter right side wheel is not riding round it's almost oval and floppy I can feel t bumping and pushing me while I drive

 

Both steer tires

 

So it's bad around turns and uneven roads it just pulls me everywhere would a cab mount bushing be the reason for this?