Judge Richard Posner is known for his way with words, especially his ability to criticize deserving parties in a caustic, humorous, and legally sound manner. So on first glance, it may seem strange that he'd criticize a district court judge for his "tone of derision that pervades his opinion" before reassigning the case on remand.
Except there is one big difference: Posner's opinions stand on solid ground. U.S. District Judge Milton Shadur's opinion, and his handling of an employment discrimination case, seem to have been far less stable, reports the ABA Journal. While Posner hesitated to call out Shadur by name in his opinion (hat tip to the ABA for digging up the district court opinion), his treatment of Shadur's work was otherwise classic, unrestrained Posner.