I doubt if it was dynamic rollover, the skids are too far off the ground - the impact of the rotors, while having plenty of kinetic energy, are unlikely to be able to lift the whole machine back off the ground to that height.
In the first of the series, you can see how the main rotor has hit the ground 4 times (each hit raised a swirl of dust) and the second was the kicker. Transmission torn from the machine, tail boom buckled to hit the ground and then broken off, airframe buckled so much the doors popped open and were then shed, hydraulics torn from the roof - game well and truly over. It then fell to the ground and lay there for a little nap.
Last edited by Ascend Charlie; 3rd Nov 2013 at 03:56.