As a side not, neither of those are glitches. Obviously the crane one was intended, but I don't see any other reason to have that scaffolding hanging there other than to use it for getting on that building.
Either way, people that use those don't last long when they use them aginast me. I did the one with the crane where you get into the building and was actualy surprised once on how long it took them (in core) to get back at me.