Blimey, fair dos to Dean, you can hardly accuse him of lurking!
I've seen film footage of the soldier actually shoving part of the tail assembly over. I'm not sure the forensics of air accident investigations are the topic of everyday conversation in the Nepali equivalent of the Dog and Duck, so 'contamination' of the scene isn't too surprising.
Or maybe there were enough witnesses who saw what happened (EG birdstrike) for people to assume an investigation wouldn't be needed.