Yes, but he's also been a head coach for 25 years, and that's not how injured players are treated anywhere in football. There's no upside for BB in doing this, and it would be a marked departure from what he's been used to doing for his whole life. It's one thing for him to do something lousy that's nonetheless within the normal contours of the job -- things like benching starters. It's another thing to go out of his way, to depart from the way things are normally done.
Plus, wouldn't he be overruled by the AD? The idea that our AD would let BB treat a player that way -- I don't know. You're way closer to the situation than I am, but I'm skeptical.
I have no idea who would be lying. I don't know any of the people. But again, it doesn't have to be lying. There could have been a miscommunication, and then it gets exaggerated every time the tale is told, etc. There are usually non-intentional ways that stupid shit can happen. If you told me that BB was informed that the player thought he had been excluded from the facility and BB's reaction was "sucks for him," that is believable to me given your portrayal of BB's personality. I just don't see any upside for him picking on a player like that