That's what I was thinking: His penis was pointing right, and that's where is trunks were pulled exposing the head of his penis, which is cut.
But again, these moments are so fast that it is possible that it is up for interpretation. I remember an ongoing debate probably 15 years ago when Randy Orton's trunks were pulled - and I mean really pulled down - in a sunset flip, and it looked like his penis was exposed, but some made the argument it was his pubic hair or a shadow.
I just wish someone would pull the trunks down and eliminate all doubt!