that video reminds me of the time I was crewing on a 29er and we wiped out big because the skipper didn't bear away in a puff. In the resulting carnage, while I was picking myself out of the rigging, he asked me why I didn't "depower the spinnaker".

Note to self...1) don't crew for inexperienced skippers on skiffs who think they know what they are doing and 2) these small skiffs do not sail fast enough to be thrown clear.