From what I can tell from the video I think Group Rothchild is in violation of Rule 12 (on the same tack, not overlapped) and Rule 14 (avoiding contact).

It looks like it happened right after rounding the top mark and Group Rothchild just went way too wide (they had to duck Ecover).
They then tried to squeeze in between Ecover and Groupama by doing a 90 degrees turn(!) but couldn't because of the high winds (just watch the spray coming of their rudders!).
I dont see how Groupama carries any blame here, IMHO should have been a DSQ for Group Rothchild (although maybe they did a penalty turn later?).

I do not think that a turn would exonerate you with that much boat damage.

Here is the same incident but from a different angle, the audio is in French but maybe someone can translate? (The only word I get is 'jury').
http://www.voilesetvoiliers.com/cou...eme-40-groupama-40-cammas-guichard-cowes

Franck Cammas, what happened in race 11?
"At a windward mark, as we were bearing away, Edmond de Rothschild Group, who were going behind us and finding it hard to bear away, hit our rudders in not such a violent manner. The two rudders and their mounts came away. All of a sudden Groupama 40 was uncontrollable and unable to be steered. She was heading straight for the sea wall. It was impossible to switch direction without the rudders. The crew was forced to jump into the water and Groupama 40 ploughed into the wall, her progress slightly slowed by the daggerboards as they rubbed up along the pebbles. The damage could have been a lot worse!"

Yep, with the damage inflicted upon Groupama, they should have withdrawn. I don't see where groupama is at fault. Rothchild was overtaking anyway you slice it.

Just checked the results and they both have a DNF for race 11.

What I don't understand is how one 'tap' could dislodge both rudders. One or the other, yes, but both of them at once? How are those things hooked on? It looked to me like they hit the tiller crossbar anyway, not either rudder, but somehow that lifted both rudders up and off the pintles? I'll bet they have a better lock on system already installed!

Apparently they sheared both rudder mounts off the transom. If they hit the one rudder and it got hooked on their bow as it came off, the force from the crossbar on the other rudder would be large. That was a pretty big hit judging by the reaction of the boats.

I'm not sure how Groupama gets penalized in that situation.

there sure is a lot of power sliding around out there...

Someone needs to invent a way to put the brakes on a cat

Kind of like putting a parachute on a bicycle in case it goes over a cliff that is high enough to have time to deploy it?