A federal judge on Wednesday admonished attorneys at Paul, Weiss, Rifkind, Wharton & Garrison, including former partner Alex Oh, for violating a federal rule in a legal spat over a deposition.

Senior Judge Royce Lamberth last month ordered Paul Weiss and Oh to show why they shouldn’t face sanctions for claiming in papers that opposing counsel, Cohen Milstein Sellers & Toll partner Kit Pierson, was aggressive and “unhinged” at a deposition without supporting those allegations. The dispute has been linked to Oh’s abrupt exit from the U.S. Securities and Exchange Commission, as she left the agency only days after becoming the chief of its enforcement division soon after Lamberth’s order.