Pacer are great boats but as all boats it has a limit and when you really push the envelope....
Guy was lucky he had a vest on and didn't bang is head going over - 10 mins is a long time with the water at 11° and with the wave conditions and visibility.
Another reason an overlapping foresail is pretty important if you want to power down without having to drop the main.
Having a guy in the water and the other guy with the camera still filming the crew and boat as opposed to acting as the spotter seems a bit dumb if you ask me but I guess they'll learn by trial and error. It may seem benign at hte moment, but any MOB should be taken very seriously - surely more important than a youtube vid.