The Chinook in the video was the victim of some Army Aeronautical Engineers who were test running the aircraft by remote control prior to shooting at it for ballistic tolerance testingl
Sadly...they chained the aircraft firmly to the ground which did not allow for the Oleo's to work as designed....and as there was no Rotor Brake on the A Model Chinooks.....there was no quick way to shut it down....thus the sad results.
The thing that stands out about the AStar coming to bits is how quickly the cabin roof and forward section of the aircraft separates....confirming how weak that thing is built.