No. Not only according to that.
Libby told the GJ that he (Libby) was surprized at learning of Plame from Russert - that at the time of his conversation with Russert, LIBBY was surprized to hear that Wilson's wife worked for the CIA.
In fact, he couldn't have been surprized at that time, because he'd looked it up himself in the very recent past, and had discussed it with others.
Expressing the presence of surprise at that time is a lie of it's own right.
You are right! Look...if Libby lied to the GJ...and it looks like he did...then it was illegal, stupid, and he deserves to be indicted and forced to defend his actions. He is entitled to his defense and we must remember that we have only heard the prosecutor's side of the story.
That being said, perhaps the best thing he could do is what Sandy "Burglar" did...plead guilty and try for a reduced sentence. However, my take is that Fitz will not do that unless Libby helps him get Rove.
Of course, when Sandy Burglar stole classified documents...a crime for which he received NO jail time AND revocation of security clearance for only a few years... nobody tried to see WHY he would do that or for WHOM he would commit the crime.
But then....he's a democrat.