You stated it was only 4 years from conviction to execution of McVeigh, that is very quick.
Conspiracy?? well, I believe Clinton did say something along the lines of "it was good for his reelection", put it together with the "militia" witch-hunt that was going on, Ruby Ridge, Waco, gun control.
Something is rotten
They didn't say "we have new information leading in a different direction" or "we will have to wait for an official investigation" or "sources tell us it wasn't ME terrorists." They just dropped it like it had never been said and no one had ever thought it. Then Billy Slick Bubba threw his "talk radio" theory out there a couple of days later.
It was many years later here on FR that I first heard of Jayna Davis and her work and we had our own sleuth, OKCSubmariner, who knew her and did his own independent investigating.
Nothing was ever so rotten in Denmark. Not even Hamlet was as sordid as all this.