It doesn't. That ancient post is the first logical fallacy new anti-freepers are taught by their AF brethren: Because JimRob was once against Bush's candidacy way back when, it is "proof" that he is a hypocrite for supporting Bush today, being paid off by the RNC, or any number of laughable claims. The simple reality - that people change their minds about who to support, or even what party to support, all the time - never enters the minds of the angry, bitter conspiracy theorists.
Actually, I figured that was what he was trying to do........an obtuse attempt to undermine JimRob AND the President in one fell swoop.
Unfortunately for him, and his fellow conpiracy theorists, their complete lack of rational thought process and logic is readily apparent, even to the most casual observer.......