I don't know when that photo was taken. I'm going by what the guest, who has spent years researching this topic on and off site, talked about in the interview. Again, don't take my word for it. Listen to the link I provided with the actual researcher and make your conclusions from there.
It was taken on the day that the search party found their camp. I understand the guy did a lot of research, but I imagine the language surrounding the state of the tent refers to the fact that all of their belongings were inside and probably in a way that showed they didn't try to pack them or take them before they fled.