Good spot RC but half way down, it reverses the direction of spin???
Maybe because of pilot input? The authorities are talking about hydraulic problems (input shaft servo)? Look at that TR on the way down.
What is debatable is why he didn't cushion the touchdown sufficiently.
If I recall correctly didn't the same happen to AG +1 in a Gaz piece @ Predannack local area at the top of a wing over?
As previously mentioned dumping the lever and nudging it fwd for speed should have helped enormously with the end result.
Maybe the revolutions were enough to disorientate the HP upsetting his decision point just above touchdown??
God knows how the other guy survived