That sure looked like a hold by #84 on that long TD run. Usually, if the defensive player can't turn around to face the direction of the play, especially when he's between the blocker and the ball carrier, he's being held.
I'm watching on my phone, though, so maybe it wasn't as bad as it looked to me.
*edit 1: By usually I mean always.
*edit 2: GTHCGTH