I dont really understand the powerplay quaterback expression here, but if you are talking about Bush's project of StarWars to help is friends in the american weapon industry, then yes, it looks like Paul Martin will back with power the idea and force canadians, with the help of conservatives, to join United-States in their efforts to prevent extraterrestrial bombs to fall on USs. Paul's Martin upside is in fact in the end of John Kerry, or let say in the end of intelligent americans.
On the other side, let's just say that if Martin can't get a majority of deputees at the next election, he will lose his no.1 spot for sure and may then retire or become a relatively good quaterback, specially if it is about not taking decisions.
It was done but I has to do it too. ;-)