Leon D. Black has dropped his claim that high-profile plaintiffs firm Wigdor LLP formed a conspiracy with a woman with whom he had an extramarital affair to “destroy” him and extort him for huge sums of money. 

Meanwhile, Quinn Emanuel Urquhart & Sullivan, which appeared for Black when he filed his complaint in the U.S. District Court for the Southern District of New York, has backed away from that case in the face of a pending sanctions motion filed by Wigdor.