"Are you a quitter or are you smart enough to have the insight to make yourself happy"
And to me that sums it up. Is Rai a quitter or is he the guy that has a big enough head on his shoulders to look at the situation he is in, analyze it and make a decision that will hopefully impact his future in a positive manner? While the decision he made may ultimately impact his future in a negative way, I'm not so sure that you can't find some positive traits in a guy that is willing to take that risk.
Obviously my reaction could be impacted by knowing the precise details of the situation (and we'll never know those). It's easy to just say that a guy walked out on the team, etc., however, I can't fault a guy for making a decision that he thinks will improve his future. Heck, there are loads of people out there in this world who would rather just sit around, not be accountable for their future and hope that success falls in their lap (and they whine when it doesn't). I think it's more honourable to take a chance and fail that to sit around and complain that you never got the break.