He didn't do so because he saw it as a publicity stunt to boost his poll numbers. That's why he leaked the intel. As he has said, he'll have more leeway after the election.
[He didn’t do so because he saw it as a publicity stunt to boost his poll numbers.]
That is the most reasonable conclusion.
Even back in February of 2009, ZBig’s protege, or at least his handlers - would naturaly looking a few moves ahead on the Grand Chessboard.