Then someone mentioned an AB206 that got blown off an oil platform in...what?...1968? Oh, how timely! Haven't we had a more recent example than that?
The point being made is as relevant today as it was in 1968, so despite all your 'years of flying' it hasn't all sunk in yet, has it?
When it is metal, (skids), against a metal heli-deck even with the RPM at idle and the controls frictioned down there is enough torque to cause the aircraft to move
of it's own accord, nothing to do with being,' blown off!