A professional outfit would have winched one of the crew down - and if you don't have medically qualified rear crew why are you transporting casualties in the first place - who would have given a full assessment based on medical and aviation knowledge. They would also have ensured the ground party knew how to use a line to stabilise the stretcher.
The ground party may have asked for the helicopter but the crew can make the decision not to winch.
Just amateur-hour all round.
From the video, the terrain looked like it might have been possible to land on nearby, removing the need to winch in the first place!