Charac, I'm not sure how the visions of golems work and how does it recognizes creatures ( I guess we can take the uncertainty and bend it to fit our goal in the game).
Drake, Shar is a human in a minotaurs body, he has a human mind and soul, so it really depends on how the golem gets information about the surrounding. If he has visual perception organs like ours, then he will see everybody including the humans and death and probably attack the trespassers. But if he feels the aura or something, then he will not know what's creating the human aura as he never saw such a thing before and he will also see Shar as a human, as Shar has a human aura (I think). Anyway, if Shar is strong enough to handle the golem and break the damn door then it doesn't really matters..