Nice attention to detail, very few of the ANH stunt EIBs put 2 rivets on their holster.
EIB granted.....Report to the garbage smasher for a disturbance.
There are a couple solutions for styrene/HIPS armor.
1: Get a piece of thin styrene and plastic model glue from a hobby shop. cut a patch of the thin styrene and use the model glue to fuse it in place.
2. Use some model glue to fuse the crack and reinforce it with a a scrap of white cloth placed over the crack and soak in superglue (just so you know it may smoke but is not worrisome). It's a cheap way of making a fiberglass like support.
The charter was just amended last year with disciplinary restrictions for 501st members among other things. I was publically against it and even created a please don't support this in the 501st area. But it passed and here we are.
The only way to separate ABS glued with plumbing cement is to cut it apart. If PVC glue was used and not the ABS or multi-purpose cement you may be able to freeze it tp pop it loose as PVC is quire different from ABS.
Yes putting the parts in the freezer will make plastic welder break loose. It does etch into the plastic, but does not melt it like ABS plumbers cement.