FWIW:
My take on what happened:
Jet comes in,pilot sees C172 and slows down based on visual maneuvering behind slower cessna. Commits cardinal sin and is not watching airspeed, but relative or closing speed with C172.
Realizes Plane (jet) is now too slow as plane rocks, rolls and pusher pushes...since Jet Pilot has not felt pusher in flight reacts as if SSOMETHING IS WRONG with plane and FIGHTS pusher, making plane go slower. Now realizes he has screwed up and advances throttles BUT it is too late and the jet is down.
Looking out the windshield , some pilots are flying by the seat of their pants and not watching airspeed. Having two pilots would have a chance of having the OTHER pilot say: HEY DUMMY, YOU ARE GETTING TOO SLOW and if nothing from first pilot, second pilot would take control and get speed back.
SPEED IS LIFE.