Talking heads should talk less about things they can't talk about

This problem probably didn't begin with the Judith Miller/Joe Wilson thing, but I'm growing more and more concerned about people in the press who, while withholding information about their sources (for all the right reasons), go on talking head shows on TV to speculate on who the sources were for the very same article they wrote.

Last night, David Sanger of the NY Times, who works in the same office as the guy who wrote the article revealing the "secret" Hadley memo dissing al-Maliki and almost certainly knows the circumstances surrounding the leak, was on PBS' Washington Week in Review speculating on whether the leak was deliberate.

There's absolutely no way anything he said on TV could be believed, given that he was under an obligation to provide cover for the source.

It seems to me that under circumstances like this, the reporters should stay off the talk shows, or at minimum avoid subjects on which they themselves have been involved.

This reminds me a little of the pretty coquette who leads the guy on to the point where he makes a fool of himself and then slaps him down with a comment like, "get your filthy paws off of me."