Thanks a million, guys! I see it now. It's funny once you understand what they did wrong. I've never seen both guys fall off a boat before it flipped.
Talking about gybing, I can understand why you'd do it in a race, but on a casual run, why would you want to gybe? Doesn't it put unnecessary stress on the stays? Growing up sailing Hobies, the owner would always tell me "don't gybe my boat."