Just to add here, in reference to the idea of Yuri K taking Frame 34 through the tent flue hole, that this may explain the black circular masking to the left of the frame, and also how the rest of the image is 'clean', free from swirling snow or even snow on the lens if taken outside.
But that doesn't explain why Yuri K didn't centre frame and focus his shot, and I believe that may be because he wasn't looking through the viewfinder to compose it, he had simply raised his tripod/camera up into the tent apex, like a selfie stick, and then reached up to press the shutter, then hurriedly retracted it before there was any glinting reflection off the camera lens, explaining the damage to the filter.
I believe, as with Semyon's two Eagle Light photo's, that Frame 34 is the same thing; the headlight of a helicopter, that is what is floating down in the image, and it approaches from the left, which equates to downhill.
The hikers had a choice, make themselves known to the military and spend half the night proving their identities and permissions to be there, and show they were not harbouring escapees inside the tent, all of which likely involves being brought down off the ridge, or stage their tent as abandoned/uninhabitably flattened and hide in their trench.
Given that their IDs remained in their rucksacks, and Igor's torch was found on top of 4 inches of snow on the tent (suggesting the hikers placed the snow there, and they wouldn't waste time and risk exposure doing that and not take what they needed to survive if felling the tent at the same time as leaving), everything suggests to me that they hid, felling the tent as quickly as they could, leaving the two ends standing, and that is potentially how Frame 34 was taken.