I'm not surprised. Why cover it up? The public responses will be motivational.
I always told my kid never to dog it at practice - you never know who is watching
I'm good with it personally. Just don't remember ever seeing a Husker practice video with a minute or two of one player being put on the pedestal of shame like Barthel did with AJay. Usually it is just shorter snippets of things, but this one hung on that minute or two of what happened.
I am sure the coaches talked with AJay during and after practice about this. I know one of the report write ups said the coach pulled him aside at some point after that, and I am sure there was constructive teaching going on. You can't have a player blatantly dogging a coach and not doing what he is told like that. Those kinds of players will either adjust or be weeded out.