I do realize that stab augs in airplanes have been around for quite awhile but don't think that minor detail in itself invalidates the story.
No, I don't think that all design details should be shared prior to racing, but a stab aug isn't a design detail, it's a powered mechanical device that...
It is a design competition as much as a sailing one. The designs always push the edges of the rules and thats why the MC has historically provided "private opinions where a team can submit a design approach and get a ruling on legal or not without showing their cards. Perhaps you feel the teams...
But then again, I fell asleep watching the Singapore F-1 Sunday. Might have had something to do with a bunch of sailors at the house from Friday through Sunday noon and the associated consumption of food and drink.