Sorry to hear of the naff paintwork
I’m guessing someone in the paintshop wasn’t bothered as it was the inside which isn’t good at all and it wouldn’t have been seen on the PDI as it was hidden
At least you have the fingerprints of the culprit
Book ‘em Danno!
As to the rite tite nut
The direction of the thread means that the nuts self tighten, this coupled with the fact that it’s tightening on and biting into a layer of paint will make it doubly stuck
When you put back, put some grease back on the spline and on inside face of the nut where it touches the wheel to hopefully make it a bit easier next time
Just wipe off any excess when you have the nut back on after a couple of firm taps on the spanner to tighten
Hope you get it sorted
