There are so many things wrong with that flight, the gear cycles at least once, its down when he enters the loop and the one flap down also, this would induce the spiral dive that happened (sorry it was not a spin) an accelerated stall spin would have rotated much faster as well, IMO the assermetric drag from the one flap down, too slow, too heavy and agressive use of the elvator all contributed to what happened.

Mike