In the fake category, if he stayed like that for "half an hour" because it was too painful to move, how could he get his shoes off?
In the "true" category, if it's been shopped or staged, someone has gone to a lot of effort with the injury itself. I'm not saying that proves its truth, but there is fairly good attention to detail in either the shopping or the prostheses which is not matched by the attention to detail to surrounds.
Ninearms, your theory about the other possible explanation jives with the hole in the lycra, although I would personally find doing anything to anyone with those socks on highly offputting. It never ceases to amaze me what floats people's boats. That said, there is probably a niche out there for some specialist powerlifting roleplay. I did put all the possible variables into an explainometer and it reached the conclusion that Buzz is probably involved somewhere.
So, from the slightly disgusting but innocent, we now move to something a little more disturbing as a hypothesis:
Powerlifting fetishism? Discuss.