The horse stance is made for awkward shaped toilets, and if done in a boxing ring it'll turn you into a billboard that has "I'm Open" written all over it.

There is moves from other disciplines that benefit a boxer, this one is not one of them. From martial arts you have a move similar to the drop-shift, a lot of styles don't have one foot forward preference which leaves for move flexibility when it comes to options. Lot's of good ideas, but the horse stance isn't anything more than a stretch for the hamstrings and thighs when it comes to boxing