I don't care if Dixon had the RB as a responsibility, there's no coach anywhere that would not let him hear about that lack of recognition in the film room. No way that CB who hadn't even practiced was 100% on an island. He was supposed to have support.
That was ghastly.
The support comes from the the FS who is in the deep middle (#33) because they are in a cover 3. This is the single most important reason why FS need to be able to run sideline to sideline and are supposed to have elite coverage skills. It's why Earl Thomas is a great safety.
Dixon's responsibility is curl/flat and at post-snap he is rolling forward to that area. There are four underneath zones by the 2 LBs and the SS (Dixon) and the nickel corner.
The corner shouldn't even be lined up in press technique with the markers being 10+ yds.
Henderson probably told the kid to line up press no matter what the call was, so they could look at his technique on tape.
I'm pretty sure the coaches are yelling at #33 more than #36 in the film room.