For both Tran's sake and Castelli's, I hope that their partnership is successful by whatever measures that they together choose for themselves. I agree that for any athlete, the Olympics should not be the only measure of success.
But I (an American who likes Team Canada too) do not rejoice that Tran will not be skating for Canada. And I do not rejoice that once again his path to the Olympics is (at best) extremely uncertain. The Olympics are much more than a competition. They are a life experience that virtually every Olympian (whether a medalist or not) holds dear.