Looks like the engine was well and truly delivering power. They can be a handful those beauties, plenty have had incidents.
Maybe when the 'engine stalled' and a wing skidded into a roll the pilot applied too much clutch pedal, or not enough? It was then that the doom plunge into terra firma was inevitable, possibly due to insufficient height to recover from an 'engine stall' and 'skid' at such low altitude.