Yikes... I'm hoping it was just a stupid mistake. The brake pads have about 30% life in them. But I'm sure what most likely happened was, he tried to kill me, and one of you paid for it (especially since one of you blatantly admitted it.)
Still, I think the worst was when I went to test ride a bike and the guy forgot to tighten the QR skewer on the front wheel with disc brakes... well you know what happened.