In your attached argument, Greenblatt says "Mike sold some of his corporate CDSs a few weeks later to meet the redemptions and did not side-pocket the remaining corporate CDS portfolio." Seems like they both agree that corporate CDSs were not side-pocketed.
I.e. he was portrayed wrong by Lewis.
"Greenblatt was a little annoyed by the question: “Michael Lewis has never let the facts get in a way of a good story."