So the nine hikers abandon the tent, not even bothering to grab warmer clothing and boots, head down the snowy, rocky terrain to the woods with poor visibility. That would have taken some time. Two of them start a fire, four more try to make a shelter in the ravine seventy meters away. But then Igor, Zina and Rustem look like they tried to return up the slope to the tent, almost a mile away.
Why do this? If the tent had to be abandoned so quickly, then why is going back an option? Certainly if a snow slide has buried the tent enough to prevent retrieving warmer clothing, then going back up the mountain isn't going to change that situation. And if the wind was blowing downhill, then going back up is more difficult, and it creates further exposure to extreme temperatures. Zina didn't even make it halfway back. They couldn't have been in very good condition at that point, unless really powerful winds made progress extremely slow. Additionally, it's questionable whether they could even locate the tent, although the flashlights may have been left for that purpose.
It would seem like staying to help with the fire or den would make more sense. Of course I'm assuming they were headed back to the tent after reaching the cedar tree, at the very least.
A related question would be why does it look like they went separately? I would have expected them to fall closer to one another if they had travelled together, which would have made more sense, being that two or more people could help each other out when falling or going off course.