"At the risk of repeating my earlier post, the 2009 fiscal year began on October 1, 2008, and the vast majority of the spending for that year was the result of Bush Administration policies".
So what you are asking people to believe the 2009 budget signed in June of 2008 for the following year had a projected 407 billion dollar deficit and somehow it morph into 1.2 trillion dollar deficit. Is that what you are trying to say? 
The point being you can divide the spending by each President that took place between Oct 2008 to Oct 2009 in many different ways and we can argue that divide until the cows come home.