Maybe the people on this forum that have been there could say whether it's possible to walk down the slope in socks without damage or injury. Having seen it first hand they must have a good idea.
I suggesr that the test could be done in any country in suitable conditions. We need to know what was worn, thendistance travelled, the comdition of the snow and the result. It is the prerogative of the investigator to draw the first conclusion.
I think a number of experiments have been done regarding walking in socks in snow. The previous videos show this. It's been done on the actual slope from the tent to the ceder and in a city park. We also have the Finish people doing their sport of running in snow. The clip I posted of the woman running through the woods in socks says it was -12.
So we can conclude that walking a mile in snow, in socks ,can be done. Obviously it's not an ideal situation, but if they can't get their footwear then what choice do they have?. You don't instantly freeze the minute you leave the tent. Although they weren't dressed ideally for a night of exposure to the environment, they also weren't naked.
Wind and wetness would be the priority to avoid. If we assume that they had to leave the tent and they could not retrieve anymore equipment then everything follows a logical sequence of survival.
If we just go with the assumption that the tent and it's contents are not recoverable then the hikers have to make a decision.
1) do they just stay where they are?
2) do they use their skills and knowledge to try and survive?
The clock is ticking and it looks like whatever happened at the tent the situation was lost, going to the wood was the decision taken.
We have foot prints from the tent to the ceder that match what the hikers were wearing on their feet. The foot prints lead to the ceder, there are no signs of other footprints, ski trails, helicopters, dogs , wolves on the slope.
If outsiders were involved, how did they go about making these footprints to make it look like the hikers left the tent and went to the ceder, how would outsiders know that these footprints would still be there 3 weeks later?.
Where's the outsiders footprints?.
If we break it into parts ,
1)we have tent pitched on slope correctly.
2)Tent is exited , shown by cuts from the inside.
3) Footprints to the ceder area
4) Fire made from branches of the ceder( best wood for the job)
5) Various items found around the ceder, coins, socks, bits of clothing, branches for insulation. ( Emptying pockets with cold hands looking for matches, dropping items, trying to use handkerchief as tinder?)
6)2 bodies with signs of burns on bodies and clothing. Undressing ( maybe wet from the ravine or paradoxical undressing).
7) Flooring found which coincide with broken/ cut small trees found around the ceder/den area.( Flooring to keep the bodies off the snow or perhaps an attempt to build a big fire? )
8) Four bodies found at ground level next to den under 3 meters of snow. ( Snow hole/ cave?)
9) 3 hikers attempting to return to the tent?
It looks like survival , that went wrong. I think it's too messy and complicated for outsiders to be involved.