Sources: Dennis Allen’s recent mishandling of Kendre Miller’s injury created internal frustration, Miller currently healthy but can’t play

Wouldn't an NFL player have enough sense to warm up without having to be told? They aren't school kids. I guess it falls under the heading of being undisciplined and a coaching staff that allows it, not just the head coach but everyone of them involved on practice days.
Nick Saban didnt allow any of his players to walk around with untucked shirts. Its attention to detail. And forcing a player to do it, will eventually teach him. Add in a million more little rules and you now have a standard of which to play by. You're either in or out. DA didn't COMMAND accountability.