He had stuck LEFT pedal, probably stuck in a climb. An autorotation would have been disaster.
With the nose creeping left as he slowed down, he was hoping that the increase in power toward the hover would make the nose come back rigt as the main torque increased. That didn't happen, the left pedal was too much. As it turned left he should have rolled the throttle down to reduce rpm a little, which would have produced less left thrust, and also would have raised the main torque. This would bring the nose right and he could have landed straight ahead.
He didn't, but he did time the cut and the touchdown superbly, so it ended up well.