My money is on Joe Wilson being the source.
Joe wilson, yeah sure. But for the Administration source...I put my bet on Colin Powell...the most passive aggressive man ever, and now, ticked off cause he is a nobody and Rice is besting him.
While I have no doubt that Joe Wilson blabbed all over town who his wife is, I do doubt he would voluntarily go to the SP and told him that he was the first to tell Woodward.