No, we didn't do anything stupid, but something went wrong on the grid. I was lowering our midstage curtain... well, about to. When I started to fly it in, there was an unusual grinding noise. I went on the roof of our performing arts center, and opened a couple of the smoke escape hatches to take a look at the rigging. The cables were tangled, so I'm not quite sure how to fix that without a 60-70' ladder.