Some of the group wanted to leave the tent, or perhaps the whole hiking trip and go back. They were dying from cold. They wanted to commit a mutiny. Others didn't allow them to go. They stopped them from leaving the tent, by sitting in front of the doorway, and not allowing them to leave. Fight ensued, that was physical and finally those who wanted to leave the tent, cut the tent and got out.
In tent there probably was fist fight or wrestling betweent these two groups. Maybe it was because some were hypothermic, the weather was too cold, they didn't put the stove on, and some were literally dying if they didn't get fire and warmth immediately. Some others said, no, we can't put the stove on for what ever reason, and you can't leave because that would lead to hiking trip being a failure. We need everybody to carry equippments. Also might have been that they didn't want others leave because they wanted to take matches, knives, flashlights and equippments that they had only one piece and others needed them too. This dying group wanted to go down and put fire and perhaps dig a den where it would be warm to wait help. Or perhaps ski back to where they came from. Or remove the tent and put it in better place. The trip was a disaster. Others wanted to continue the trip and receive the reward.
After they got out from the tent, the others came out too, and fought the first group some more beating them with fists, kicking one in the head. They had marks from this.
After that, the tent was nearly blown away by strong wind, so they all had to make a new plan, they had to put snow on top of , it, hurricane was blowing, and they were all cold. They had to all go down as soon as possible, to make a fire and den for all. The tent was not usefull anymore. But they could sew it together another day.
So they all left the things in there, cause they couldn't find their boots and clothes in darkness or from under the snow anymore.
While down, others made fire, found fire wood, others dig a den. After some time, 2 Yuris died from hypothermia by the fire, the others took their clothes. Thew went to den, but started fighting again. This made the den collapse, or it just collapsed by itself. Or maybe someone was walking accidently on top of its roof while trying to find it in dark. They were crushed. Kolevator is not "hugging" Semyon, but maybe wrestling, trying to restrict him or something and their bodies were found like this.
They fought eacothers. People don't like to say this. The autopsy doctor says this same thing. There were no outsiders. Who would go out in the cold in the middle of nowhere to fight or kill random students? Nobody. Not even an animal. Not on a mountain. It was all themselves. It was a mutiny.
Dyatlov died of hypothermia, Zina also, Rustem for the head wound. Someone kicked him on the head or he hit it in darkness on stone and died.