Interesting pictures, I improved them with about 40 times higher resolution.
The pictures are taken immediately after the accident and in reverse chronological order:
The first one already had his boots off, so there was someone else here, besides the one who took the pictures, who moved him compared to the first picture:
But why did someome else take one boot off him?
green socks
Comparison of the improved resolution of factor ~40:
The whole pictures in about 40 times higher resolution:
Thanks for your details. And I think that he has already lost his left boot. Because in second picture we still cannot see the left one. Perhaps someone has put him straight for waiting the ambulance.