They were slowing down....approaching a hover as seen in the video.
A unique aspect of the Blackhawk is the low profile of the design.
Depending upon where the Snorkel wound up....Main Rotor system or the Tail Rotor System....the crash sequence will be much different.
In time...the investigation should be able to figure that out.
It could be the Snorkel "flew" and went up into the Main Rotor or it swung back into the Tail Rotor.
The length of the Snorkel will be a clue to that if it is too short to reach the Tail Rotor.
The Black Hawk Rotor Blades are pretty tough hombres....ask John Dixson to tell the story of the Prototype that hit a tree during initial fly off competition with the Boeing UTTAS during competition for the Army Contract.
https://www.sikorskyarchives.com/pdf...Jan%202008.pdf