For those interested in survivability in a similar accident, I refer to this report into a photo flight where and EC130 from a hover, spun from 220 feet and crashed into sand dunes. Even with the EC crash absorbing seats 3 passengers and pilot perished. There was no fire. The report goes into detail regarding vertical G forces.
https://www.onderzoeksraad.nl/en/ond...725A7A690814F2
The crash was recorded on video from a distance so the rate of descent is accurate.
Note that pictures of the wreck show the cabin forward of the seats missing, it appears this was done to remove one of the passengers whose limb was trapped rather than being sliced by rotor impact.
Mjb