It gets clearer. When Judd Gregg approached the Obama administration to see if he could be a part of it, he was assuming that his own party wasn't going to adopt a policy of total warfare against the newly elected president in a time of enormous economic peril. Between that moment and the current all-out ideological assault on Obama, his position became untenable. His recusal on the stimulus package provoked fury at home (check out the comments here) and dyspepsia among the GOP who are intent on responding to an open hand with a clenched fist.
I have to say even I am a little taken aback by the force of the Republican assault. Even in a downturn as swift and alarming as this one, even after an election that clearly favored one approach over another, even after the most conciliatory efforts by an incoming president in memory, these people have gone to war against the president. The president should stay cool. The rest of us should realize what motivates the GOP: the opportunism of selective ideology.