I see it simply as.. Tryamkin was overwhelmed.
New country, new culture, language barrier affecting effectiveness of receiving coaching instruction/communication, Pronger tapes, fighting lessons, he wasn't being used as much as he thought he should, disagreed with their assessment of his conditioning level, rejected a conditioning assignment to Utica, (Basically a lot of "I don't like/agree with the coach" stuff, ) got married (a huge life step), wife experiencing the same culture shock.
He assessed that it was in best interests to go home for 3 years with his new family to mature emotionally/physically/professionally, in a more comfortable environment. He'll be much better equipped to handle it when he does arrive... and he'll be driven to come over to be financially rewarded for his lifetime of dedication to the sport of hockey to the tune of a *$20 million contract to set him for life (structure as you wish).
It is admiral that he did put himself/family/happiness first when others would of miserably stayed for the $$. Sucks for the Canucks... but the product we get back will be worth it. Both for Tryamkin ($) and the Canucks (polished asset).
His current team will do everything they can do non-financially to get him to stay... including maybe guilt tripping him, working a loyalty angle, treating as a king, maybe even making him the captain and talking about how important he is to the team. Everything but promising *$20 million.
Don't. Blame. Him. At. All.
*$20 million is the estimated value of his next NHL contract... which I predict will be a $4-5 mil/yr 4 or 5 year pact. (2 more seasons away - so these numbers could be considered low by then)