He was wearing a wing suit. Not 100% sure on the dynamics of those, but there are a couple of things that probably contributed to this. In the video he does a double flip, but as soon as he comes out he throws his chute. With a wing suit, you have a bit more drag, so to fly it the skis need to eject. He was probably laid out when he pulled the release for the skis. One didn't come off, the wind drag hung him upside down and caused him to go into a death spin. He was not going to get out of the spin unless he got the ski to eject. Pretty much fucked. It really sucks and we lost a great.