Logically, that makes no sense at all. Let's say for argument's sake that this is all a political ploy to boost Bush's approval ratings. Why would he play this card NOW...with 3 months left to go before the election? Everybody knows that voters tend to have short memories. If this is all a psychological ploy to want to vote for Bush, why didn't he wait to use this tactic in mid-October when it would be fresh in voter's minds?
BTW, Michael Moore knows that voters have short memories. That's why he arranged for the F9/11 DVD to be released just before the election.