Here's the video. I wish I knew how to embed it on this board.
I mean, it's kind of hard to defend "missing" that OOB. He's right there, whistle in hand, looking down the pipe at the sideline. His whole foot was almost entirely OOB; in fact, the outer edge was the only thing that was touching the line.
The only defense he could have for missing it, was his vision may have been blocked by the St. John's player and the coach, who was entirely out of his box and was right at the division line.