Didn't Wilson charge that he was sent at the behest of the VP's office in his "anonymous" Op-ed? (I wish my memory was better!)
Nope. He didn't write an anonymous op-ed. Kristof wrote one that talked about him. In the op-ed Wilson wrote, he flat-out says that the VP asked the CIA questions, the CIA decided to send someone to Niger to help them answer those questions, and the CIA decided to send him. Which is, indisputably, what happened.