Maybe because he thought you were an idiot, and didn't want to stand in the middle of a person he knows nothing about and an idiot? So he took sides with the most sensible person with what he knew? Maybe? That's what I got from it. :l
Or maybe it was what he said. Maybe he's stupid. I don't know. :l
Not to say you're an idiot. You're a fine fellow. Just a bit arrogant at times. :o