I haven't followed this closely, but hasn't he been convicted of saying UNDER OATH that he had NOT talked to Russert about this (he had) and to other reporters? (He had). In other words, the prosecutor did not get him about the Plame name, but about whether he even talked about her. So there's not much either Powell or Amitage can do.
In a just world Fitz and the jurors would be put on trial for the misuse of taxpers' money.
Particularly after Wells showed that Russert's memory is absolutely horrible, how could anyone convict Libby on he said/she said testimony involving Russert?
No, Libby said under oath Russert told him about Wilson's wife and he was surprised to hear it. Libby and Russert both agree the conversation took place but Russert denies telling him about the wife and in fact says no such discussion of her took place at all. And there was the issue of Libby saying he was surprised.
However, he also told the FBI up front about hearing it from Cheney back in June but hadn't remembered it, just had a note about it so it's hard to imagine why he'd fabricate such a conversation with Tim Russert of all people.
And finally, Russert's memory and very credibility were brought into question in the trial.