Was this shock damaged?

I had a local shop replace the OEM shocks on my truck with Bilstein 4600s a couple months ago. On my last trip I hit a large pothole on the left side and heard a clatter towards the front of the truck. After that when I hit a sizable bump on that side I could hear a small rattle in the left front area. Upon investigation, it was found that the shop had failed to install a washer on the left front shock, the one under the lower bushing, and the nut there had been pushed up through the bushings. Luckily the shock rod didn’t push up through anything, it was just rattling a bit. And with the camper on the truck its handling wasn’t noticeably affected. So I was able to continue on to my destination … our annual family campout. At the campground, my DB was able to effect a repair after another relative provided a suitable washer and a fellow camper provided a 15 mm socket. (The DB was right. I’d barely finished putting my “NEED 15 mm SOCKET” sign up at the front of my campsite when the first person to come by said “I have one”.) Now a question for you. The bushings didn’t appear to be damaged when the nut was pushed up through them but could anything else in the shock have been damaged? I’ll be having a discussion with the manager at the shop that botched the job and want to know if I should have them replace the shock, at their cost of course.