I just reached Carville on his cell. Here's what he had to say about this:
"Fox was, is and will continue to be an asinine and ignorant network. I have not spoken to anyone in the Clinton campaign about this. I have not done domestic political consulting since President Clinton was elected. I'm not getting back into domestic political consulting. If I do go back, it would be safe to say that I'm the biggest liar in America."
Asked if he knew whether Begala would be coming back, Carville continued:
"To the extent that I know anything, as of nine this morning, no he is not."
Oh, well. There goes that narrative.
Late Update: Ben Smith gets a denial from Begala, too: "As I say to the boys: N.H.D. Not Happenin' Dude."
