Here's how I saw it, on the video that is.

What tack did the H16 come in on again?

The outer 2 boats were trying to give room.
The inner (Purple)boat did keep clear,
the H16 (and by his admission on here about gybing the tiller 'behind' the maisheet- isn't that how you 'tack' too? but I digress) he went to high and actually 'fouled' the inside boat. You can't just steer up and tag someone and yell 'protest'.

That was some light air, at first I thought it was in slow motion.

The way I see it, until H16 gybed onto port, He HAD rights- as in to sail a bit farther, etc.

The way it played out- the only foul I saw on video, was the h16 tagging the other boat when he lost control during the gybe. The three boats coming in on Port looked as though they were trying to 'avoid' the starboard boat, which did indeed gybe onto 'port' right in front of them.