Is the decision not to walk Arias being talked about anywhere else?

It's going to sound like second guessing but.... what the actual heck? I wouldn't have done it until the passed ball, but with the pitcher's spot on deck, why in the world would you not walk Arias with first open!? You either make Romo bat, or the Giants use their LAST pinch hitter, AND Romo has to come out of the game. I was screaming at the television. Has anyone asked Baker about this yet??