I readily admit that I don't know every detail, and tend to be biased in these cases. But based solely on my opinion that many of WM's decisions have been wrong up to this point, I'm not a big fan of the decision. Players have spoken about it as a "shock", saying that he was a good teammate and improving individual. So I think divits is correct that he panicked a bit, perhaps due to some personal circumstances, and felt that his time to impress scouts was closing and he needed, or even deserved, to start.
My biggest issue here is that it's a mistake. Orr shouldn't have acted that way, and already got some of his punishment by being sent home. But for a 40 something year old who has largely failed at his job, made terrible personnel decisions, botched several recruiting opportunities, yelled at a fan, condescendingly lashed out at reporters following an epic loss, and told an entire fan base comprised of the very people who write his pay check to "get a grip", and yet still feels he deserves another chance, I find it discouraging that he is so definitive in his not allowing a 21 year old to come back from a mistake of his own.