If they had thrown a flag on that for PI, I'd be asking the same question: "What the hell is a cornerback supposed to do?" He had body position...is he supposed to step aside so the WR can go around or through him to the pass? Sorry, but if that ball is placed towards the pylon or the back corner of the endzone, it's a touchdown or a legit call. That isn't a bad call by the officials, that's a bad throw by the QB.