i think that ETNZ should set a wind limit as early as possible and then if they find out that the wind limits are too high for the boats, they consult the challengers and change it accordingly.
i don't agree with how oracle changed the wind limits completely.
i don't think that the decision was too awful to reduce the upper wind limit, after a guy dies i think something publicly has to be done to show the audience that they are taking steps to make sure it doesn't happen again.
was it the best decision? i'm not sure, maybe they could have changed the class rule some more to ensure safer boats?
i think it was a bit suspect that the change in the wind limits helped them significantly. it was clear that their boat was less suited for the extremes of the wind limits compared to ETNZ's.
do i think it was purely to save their asses come the match? no, i think it was a bit of a knee jerk reaction after they say how hard the boats were to control on the foils in really strong winds, and how unsafe they were so they made a rule change to make it clear to the layman that they were improving the safety of the racing for the sailors. The advantage to them was a byproduct of which they reaped the benefits.