I'm not an expert in fake photography but I believe the picture to be genuine and here's why. Someone mentioned the ground is undisturbed behind the plane. I believe it spun 180 degrees before it stopped sliding. The ground in front of the plane looks somewhat smooth to me as if that's what happened. That would also explain why the pilot is upright in the cockpit. Since the rudder has been shot away that would also explain the lack of directional control.
The prop is bent backwards. When I was working on my masters degree in aeronautical science at Embry Riddle Aeronautical University we studied aircraft mishaps. Every picture I ever saw of a prop plane crash, other than a smoking hole in the ground, had a similar looking prop. As a point of interest, the aircraft speed can even be determined from prop marks in the ground. If the engine isn't running at all, then that will also be evident.
The horizontal stabilizer's control surface is hard up. This indicates the stick was full back in an effort to pull up. Due to extensive aircraft damage it was likely locked in that position.
Panels are frequently lost if the airstream gets beneath them. The plane looks to me like it has been shot to hell. I would be amazed if any removable panel remained.
The pilot likely lived long enough to try to land the plane. It landed upright and level. It didn't tumble and roll itself up into a ball of aluminum.
I'm not familiar with German military flying apparel however the slight pleat at the shoulder suggests to me a leather flight jacket. That was common in Allied forces since the aircraft had no heaters. I suspect the white area on the chest is a scarf. I don't believe there has been any vandalism since it appears to my old eyes that the pilot still has a ring on, possibly a wedding band.
Of course I could be wrong but that's my opinion.