Well, that was bizarre. We’re referring to the fiasco Tuesday of what was supposed to be the sentencing of Michael Flynn. The sentencing was postponed until next year, but not before federal Judge Emmet Sullivan damaged his own reputation with an extraordinary public attack on the former national security adviser for a crime he’s not been charged with or admitted to.

Mr. Flynn pleaded guilty a year ago to a single count of lying to the FBI. Yet after being assured that the former three-star general is sticking with his plea,...