"The 78 feet deviation by the Mil Heli is not the cause of this accident . I hope the lawyers during the trial do not focus on that and minimize the rest ."
It wasn't the sole cause but it was one of the holes in the cheese. If the helicopter had been where it was supposed to be (further east and lower) the accident would not have occurred.
The purpose of the trial is to determine legal liability. It is the purpose of the NTSB investigation to recommend ways to improve safety.