Rustem having only one boot leads me to believe he was either taking footwear off or putting it on when something happened, I can't see there being time to get partially dressed and not have time to grab a saw, ax or blanket .
Slobodin wanted to put on his boots to go see what was happening in front of the tent. In the urgency of the situation unfolding in front of the tent, however, he did not have time to put on the second pair of boots.
After that, only Doroshenko and Krivonischenko remained in the tent.
Lebedev Vladimir Aleksandrovich
"...apparently someone stayed in the tent much later than others..."
https://dyatlovpass.com/case-files-313-315?rbid=17743
They stayed in the tent longer than the others, which is why a picture of a "light object" could be taken. They had more time to stay in the tent, because the threat was currently focused on the tourists in front of the tent.
I understand this is your interpretation SURI. There is nothing to say this was or wasn't the case .
Regarding the photo with the" light object", there is no evidence to what it is or when it was taken , the speculation is that it was the last shot taken by the person responsible for developing the film to use up the the last frame as to be able to remove the film from the camera . Unfortunately there is no proof that the image was taken at the time of the incident.
Also , if he had time to find and gather the camera, take it out of the camera case , make an attempt to adjust the exposure and focus to be able to take a night shot , then I would think he would have time to put on the other boot .
I don't know how you workout the chronological order of people exiting the tent as I do not think there's enough information to determine this.
The full sentence from your quote of someone staying in the tent is this .
"
In the tent we found a ski pole with the upper end cut off along a neat end cut and another cut made. This suggests that apparently someone stayed in the tent much later than the others, maybe for a day. Because a person with nothing better to do would not cut a pole that could still be useful.The word "suggest " is used , this is speculation on his part and I fail to see how he concludes that some stayed and extra day because of an cut ski pole. The problem we have is that everything in the tent had been moved at least once before the formal inspection and various items had been used by the searchers to dig around the tent and ski poles used as make shift probes if my understanding is correct. Likewise , some of the skis were given to the sappers with metal detectors as they arrived without any. I would need to check with the chronology of this but it may have been the day before the formal inspection, if that is the case , then everything was definitely moved. I think this is why we have a number of different statements to the tent layout .
However, the statement goes on to say.
"
In one place of the tent it was torn and then fastened with a pin."
This is interesting as it might mean someone stayed in the tent and used a pin. A pin is not a long-term solution to fixing a tent , especially one that might experience strong winds on an exposed mountain side . A small rip can easily extend to a large rip if the material is not stitched . They were stitching the tent the days before , so I thought this would have been addressed earlier.
I don't know if this pin could be a clue to a different set of circumstances and I am not trying to criticise your version of events. Plus it's good for me to re-read the case files.
If anyone stayed later in the tent , then I would argue that they would be the best dressed and equipped, unfortunately none of the group seemed fully equipped to survive independent of the tent and it's resources for a longtime or in the cold . If some were retrieving wood , they don't have the saw , axes , knives or means to carry wood back to the tent, the same goes for water.
There is one torch on the slope which is not taken with them. This is the one in the on position. I don't think this would be thrown away either . Interestingly enough , if my memory serves me correctly, in the last winter expedition this year, they reported that is as easy to see without a torch as it is with a torch. In winter in the dark and right conditions you can navigate without to much difficulty, the eyes adjust and obviously the snow reflects what light there is.
I do think the torch may have a significance due to its location and the fact it was turned on.