My point is that because the ravine 4 bodies were witnessed by no less than 14 people and frozen solid, there was no way the remains could be tampered with as they were transported off 1079. When they were examined later, they bore the physical marks of exposure and injuries. The idea of infighting is always brought up, but when considering the proximities and postures of the deceased plus what they were wearing, for me it points to cooperation, not alienation. Murder? It would have been sloppy and ineffectual. A blast? There was none. On the other hand, they had knives and matches. But against snow, wind and cold and a likely snow cave collapse in the ravine, they were insufficient.
The helicopter pilot seems to be a " by the book" type of person. It is safe, if not a bit bloodless. We know there was pressure to wind up the case and be done with it. I do not think this was to cover up misdeeds, rather it was because of the amount of time passed between finding the first and last hiker. The pressure to conclude activities is likely more about cold weather, mourning families and getting back to work. Soviet national politics, not so much.