I'm currently rewatching the Steelers/Bengals game, and this isn't the first incident where Cook ends up on the ground and becomes pointless as his defender makes a play on the ball carrier. Another play so far i saw, is where Cook gets pushed straight back 4 yards, Hampton releases and tackles BJGE for a 5 yard loss on 2nd and 1. The coaches have to see this and something has to be done. He gets straight owned on this play. Again, this is just one of many plays.