OK that wins the prize for the worst rig I have seen, and I've read every single post in this thread. It looks like it fell though the ceiling or something yet somehow is stacked semi neatly. Is that a wasp nest or beehive developing on it!?!
possible roof cave in on it?
My guess they put too much load on a wire, it melted, shorted and set on fire, then burned through the ceiling causing the collapse. Before you put rigs together learn the load capacity AWG (Americican Wire Gauge) of your power cables.