Who's the Dumbass that did not latch the door upon exiting?
It was an actor, would we expect otherwise?
are you sure that that the helicopter was at full power to lift off?
As Savoia said, the video starts after the resonance started. There seems to be plenty of Nr so it seems to be at or near t/o RPM.
It's the lack of either lift-off, or throttle chop and rotor brake (but too high an Nr for that probably) that prompted me to suggest the pilot just sat there and watched while his world - and job I expect - disintegrated around him.
I have witnessed an Al II get into resonance and the pilot lifted off immediately as did the Gaz in the video. Maybe the 350 pilot hadn't been trained to recognise what was happening, or what to do about it.
I would like to read the investigation report before blaming the pilot
What would you expect to find in the report that would exonerate the pilot? Lack of training I suppose.