I think this has been a set up from the get-go, starting all the way back in 2002. The CIA referred the Plame matter to the special prosector. All roads in this mess lead to the CIA. Although it likely will never be confirmed in public, I suspect rogue elements in the CIA attempted to undermine the administration's war effort by setting up the whole Wilson Niger report garbage. The Plame-name-blame-game is just so much gravy and gave them an excuse to ask for a special prosecutor.
I agree. It makes no sense why the CIA would send the spouse (Wilson) of an employee (Plame) on a critical fact finding mission. It had to be a rogue cabal within the CIA that authorized the trip.
It was surely outside the boundaries of normal procedures.