Alignment off after fender bender?

I was stopped waiting at a traffic light and the guy behind me just spaced out and ran into me. Sustained very minor bumper damage, and it’s at the dealer collision place now being repaired.




A little while after the crash, I noticed pulling to he right. Collision place says there’s no reason the alignment would be off after a little bump like this. I agree I can’t think of any reason... unless something was loose in the first place.

Then I’m remembering I swear I saw someone on here talking about loose U-bolts from the factory. As I was hit mostly on the right side, with my foot on the break. What are the chances my rear axle is slightly askew due to loose u-bolts?

 

Trailer hitch looks like it took a blow. maybe more hidden damage?

 

The collision guy test drove and acknowledged the alignment was off. Sent it in to the service dept, who printed an invoice for the alignment. But I got the truck back yesterday, bumper is good as new, but it doesn’t look like they actually did anything with the alignment.