The fact that men were involved in sewing the curtain suggests it was likely an insulation barrier hung at the tent's entrance. Sewing a privacy curtain would have been a chore no man would have volunteered for. I do not believe they divided the tent in two on the night of the Kholat incident. At previous campsites, the stove was lit and the environment was comfortable, so they would undress; on the slope, however, the plan must have been to survive until morning while fully clothed.
In the valley, there are no deep precipices where one might fall and break a bone. While accumulated snow might have raised the ground level, it is impossible for so many people to have sustained fatal injuries. One person getting injured might seem plausible, but certainly not three or four.
The tent was not facing the moving snow slab; it was positioned sideways.
If you examine the cuts in the tent, you will see they were generally made in the upper section of the sidewall. Cutting into the upper wall of a standing, sturdy tent is an athletic feat akin to a hurdle race. The fact that the cuts were made high up on the fabric indicates that the tent had collapsed; the roof seams must have sagged down to the level of the sleeping hikers' heads.
The fact that the tent remained partially standing suggests the most logical course of action: the first uninjured individuals to exit propped up the tent poles and tightened the guy lines to facilitate the evacuation.
Had it been a classic avalanche, they would have been buried under meters of snow and suffocated. However, in the case of a slab avalanche... We can describe the event as a wind-hardened snow block—measuring 30 by 60–70 meters and 50 cm thick—striking the tent, flowing downward without burying it, and finally breaking apart and coming to a halt 100 meters away.
I believe Semyon was able to walk with the support of two people. Tibo and Lyuda must have been carried. I attribute the fact that the tracks reflect a calm, walking pace to the fact that they were carrying injured individuals. I do not see footprints belonging to nine people on the path.