>I look at the video and see that Port could do nothing more (The fleet knows that the boats don't bear off... <

Isn't this the second time we observe a bear away collision?
Someday we may see low stall rudder shape change?

Looks like the main traveler was eased.
Could the main sheet have been released?
Perhaps the main sheet prevented the traveler from going out further?
Why was the jib released at the 18 sec?