There was a video on TV a few years ago of a man (I think he was from here in WA, maybe Toledo area) who got pounded by a buck in just the same way. The moron had doused himself with elk lure (urine). I guess the buck thought it was some kind of trick...
Sue
This, I suspect, is pretty much analogous to a man, in a passionate embrace, finding out his girlfriend is a male. There are men with sufficient perspective, or predilection, who could handle such a situation gracefully but most men can't or won't.
A buck spends considerable amounts of time and effort following a scent trail expecting to find a receptive doe. Instead he finds a human male poorly equipped to handle the situation in an appropriate manner. The buck, quite naturally, can be expected to take out his frustration and anger on said human.