Incredibly dangerous.
What ground speed was the C310 doing? 80 knots into a bit of a head wind?
That's about 150 km/hr.
For those in the back of the utes, whose task it was to manage the rope, this must have been incredibly dangerous. I nominate those individuals for the Darwin awards.
Why did the PIC allow such lunacy? What about the laws that must have been broken? (Reckless/dangerous driving of the motor vehicles, and with respect to the aircraft: illegal maintenance!)
Was any attempt made to prosecute the individuals involved? To discourage others from what seems to be portrayed here and in the media as heroism, there should have been prosecutions.
get over yourself.