Where the "Judicial Temprament"?

It sounds like Judge Reggie Walton -- who has sentenced Lewis Libby to prison even while his appeal is pending -- has a judicial temprament problem. That's the only way to figure his inexplicably snarky response to the offer of prominent law professors to try to convince him that he's in error with his sentencing decision.

One would think that having such a prominent stable of experts willing to come in on Libby's behalf might signal that perhaps he should reexamine what he's doing, but that sort of modesty doesn't sound like it's in the judge's make-up.