As pointed out in Post #4, I was taught in primary flight training to use opposite rudder and some nose down elevator to recover from a spin and to leave the ailerons alone. It appeared from the video that large aileron deflections, in the direction of the turn, were used, including large "up" elevator (ANU) deflections. This seems just the opposite of what I was taught. I would think that an airshow pilot would know these things, so that raises the question of incapacitation or disorientation. We'll probably never know. Anyway, this pilot apparently loved to fly ... R.I.P.
Cheers,
Grog