Without seeing the car and the damage, I'd offer that:
1. Finding it before catastrophic failure is very very fortunate
2. The damage can probably be repaired at this point
3. Having it actually separate would likely be beyond practical and economic repair
4. ALL OF US NEED TO INSPECT AND CHECK TIGHTNESS ON ALL THAT HARDWARE! I'm not the best at remembering stuff like that but recent developments (on the order of this one!) prompted me to do so and fortunately Base Plates on two toads, Hitch on RV, and other misc parts were all OK.
5. Advantage of a DIY installation. If Instructions say RED LocTite, I'll go get some. Some shop may just say "OK it's tight enough."