it also looks like he had 15 degree of flap through out the flight. hmmm not sure why he would want flaps deployed when he is in aerobatic mode same with gear down. Flaps in a high speed loop that's a no no, so he could have lost a servo during the loop which would also cause the death spiral. So here you have it, Pilot Error (IMO)... sorry to say that but I wish you best in your next jet.