I have only seen one thing earth shattering in Tenet's remarks. He clearly states that he believed Iraq had weapons of mass destruction. He takes fault & blame for the NIE of 2002 that indicated Iraq had WMD. He did say "it's a slam dunk." What IS earth shattering is that there are so many that believe the President should NOT have believed his head of the Central Intelligence Agency, the combined consensus of 15 other intelligence agencies herded into the NIE and the consensus of every other government on the face of the planet including Iraq and the former U.S. administration that he did have WMD.
Now, just how crazy, foolish and stupid would President Bush have looked if he said five years ago that all of these people were nuts and wrong.