"the entire grand jury was a perjury trap. it wasn't investigating any actual crime once the facts regarding her status (not covert) were understood."
All Libby had to do was not lie and he could not have been convicted of perjury or obstruction of justice. Libby's crime was lying to investigators. Plame status was and is irrelevant to Libby's crimes.
The whole issue of whether leaking Plame's name was a crime or not wasn't even part of this trial. If that were the issue in this trial then the facts surrounding her status would have been relevant, but for the purposes of this trial, those facts are irrelevant and always will be irrelevant