Because it is a controllable mistake. An un-excuseable one at that. The facilities that house the mix output of live feeds are manned by an A1, whose sole responsibility is the quality and routing of all audio downstream of the facility. It would take the simple one finger move to move a fader bar down when she was off the floor. The A1 is supposed to be listening to the main mix out at all times. I would imagine this is going to cause a few heads to roll. You wouldnt believe the amount of cursing ones mother and retribution that occurs from a single static blip that occurs on-air, much less a fuck up like this. Blacklist. This probably ended a working man or two's career.