I don't think theres anything wrong with what he's done/what he believes. If he doesn't want to play - no one is forcing him. Good on him for being honest and good luck to him with the music career. If I had a chance to live my dream - I'd do it anyway I could aswell.
Still prefered if he had at least gone about it a different way though. Informing the coaches beforehand etc. Rep footy might not be a big deal to him, but it is still a component of League and as a professional first grade player (and because it is his job) he should have at least had the deceny to tell them.
I'm sure anyone who is being payed a few hundred grand a year would ring up their boss to inform them if they weren't going to show up. It's just plain unprofessional not to do so.
But hey it's over now, put it behind us. We got the truth and Ricky's got his apology, lets not focus on the negative of int. footy anymore - more stories on those who are bleeding green and gold for their jersey I say!