The Washington Post reported today that an administration official told them on Saturday that two White House officials leaked the information to selected journalists. Now that is interesting since the White House is denying any knowledge of a leak. The article goes on to say that the controversy erupted over the weekend when administration officials reported that Tenet sent the DOJ a letter. And then goes on to say CIA officials approached the DOJ within a week of Novak's column.
The timing of all of this is suspicious to me. These are a bunch of disjointed official events, there is no natural momentum except that created by administration officials. (I can't link at the moment but this is all from Mike Allen's article in today's WAPO.)