That's about 12-14knots of breeze. Look at the flag on the committee boat: http://youtu.be/i128Pk8vFbE?t=3m58s

I suspect that those guys are trying to lay the finish line but there are other things they could do to depower the boat and not flog the kite. You want to avoid flogging the kite if possible. The skipper should be bearing away and changing the wind angle as the boat heals but if they are trying to sail a higher line for some reason, this could explain why they keep it pointed in the same direction. In that kind of wind (or stronger) you carve the boat constantly to keep the power level consistent without having to constantly make sail adjustments. If they are trying to sail a high line (perhaps they are overstood), easing the main traveler is the first thing to execute, putting in a little downhaul to take a little power out of the main would be next (not a whole lot...you can overstress things here). The skipper should probably also be out on the hull but it's hard to tell what the water conditions were...putting your weight in may help take a little pressure off the bow but it won't help you sail a higher line. His crew should also be trapezing back as far as possible...it looks like he's in front of the rear beam. He should have a foot on the stern to help keep the bows a little drier. Oh! and good lord, get the daggerboards up at least half way. That alone would make these guys have a much easier day by keeping the boat from healing over so fast and often.