Skipper released shroud pins when boat was upside down in an attempt to get it from turtle position.
OK, I reiterate my statement that they left their brains behind. There is nothing so hard to right as a boat without its mast attached.
To get a boat on its side from turtle, do not do what Chris (flumpmaster) suggested - you'll fall and hurt yourself. Get all your crew weight on the downwind aft corner of the boat (sitting). The opposite front corner will start to lift, wind will get underneath the trampoline and it will slowly come up to the capsized position. Then right as usual.