In the wake of the ugly breakup of Cohen Milstein Hausfeld & Toll, a heavyweight plaintiffs class action firm, a federal judge in Philadelphia has effectively ordered the lawyers to do their best to get along as they finalize the work on a massive antitrust suit that generated more than $120 million in settlements.

U.S. District Judge Paul S. Diamond is overseeing In re OSB Antitrust Litigation, a class action price-fixing suit against the country’s top lumber manufacturers (pdf).