Sounds like the pilot is talking about the simplest thing in the world. Video makes the pilot seem incredibly calm in the face of the plane moving in a crazy way.
Edit: what would make the plane move that way?--it seems to recover after initial spin only to drop nose down, then start strafing (correct term?) left and right like it's in a half pipe before starting to spin again. It looks almost totally of control, to me it looks like it hit a wall of air. I have no idea. I'm amazed the pilot was so cool. Very impressive