If Libby hadn't lied (assuming the facts as laid out in the indictment), the GJ would have disbanded with no bill.
Possibly so.
But was the timeline? At what point in the "investigation" was it clear that either Libby or the reporters were lying? Do we know? This seems important to me since it was clear at a very early stage that Plame had been stationed in the U.S. for over 5 years and was not covered by the applicable law. This would be a fact easily discovered by Fitzgerald and the investigation should have been over at that point.