I have read many times the speculation that Zina, Igor, and possibly Rustem were the last to die, possibly as they made their way back to the tent after spending time trying to help the others. And that may well be true. But one thing that always seems odd is "Dyatlov is the only one whose cadaveric spots match the position in which he was found (on the back). All others do not match."
Does this mean that Igor ran around rearranging all the other bodies before he succumbed to hypothermia? If not, then who turned them over? Rustem and Zina look like they are lying in "dynamic" positions that seem to indicate they were crawling in the snow, but not if their bodies were turned into this crawling position after death.
[PS: I am aware of the controversy surrounding the question of these livor mortis spots.]