He did endanger life – his own. How would those rowers or the following boats have felt if they'd killed him. You really wouldn,t want to get your head tangled with those oars, not to mention with the motor boats behind. His choice, I suppose, but there are plenty of ways he could have made a protest without spoiling the event. The guys who row in this race train very hard and it's a complete toerag who then goes and wrecks it for them.
I think the court judgement is a bit 'steep' too. I wonder if the judge had a rowing blue?
I agree that he's a prat. I also agree that he has a perfect right to protest. I'm not sure I agree he has a right to spoil a much-loved national sporting event.