I believe it was intentionally made to look unintentional. If you watch the replays of him it is pretty clear he started out watching the kick return from the edge of the white and then pretty much timed his "look back" over the shoulder to coincide with when Jacoby was only a few strides away from him. You can clearly see him look over his shoulder as Jones is approaching (ie he timed it with what he was watching on the screen as Jones was breaking through his coverage unit) and suddenly he steps out and almost immediately bounce s back away from the field. He swears up and down that it wasn't intentional, and as much as I HATE everything that embodies the Steeler organization I have always felt Tomlin was a pretty classy and straight up decent guy, but in this case it's pretty clear to me that he is lying (as you would expect he has to) through his teeth on this one. I hope they hit him with a 6 digit fine, as a I suspect they might.