Eckert has overseen many of FIFA’s recent high-profile ethics cases, including those that resulted in multiyear bans for Blatter, FIFA’s former president; his former top deputy, Jérôme Valcke; Platini, the longtime chief of European soccer; and dozens of other officials. Since 2015, Eckert said, his committee has handled nearly 200 investigations.

Eckert’s critics have noted that he had held his post as chairman of the adjudicatory chamber of the ethics committee since 2012, and that Borbely had worked in its investigatory chamber since 2013 — years before arrests that were prompted by a push from the United States Justice Department exposed the corruption that their committee, the critics argued, should have been policing all along. Eckert was also criticized for refusing to release a report on corruption inside FIFA compiled by the ethics committee’s former top investigator, Michael J. Garcia. Garcia, a former United States attorney, resigned from FIFA after his appeal of Eckert’s decision was denied.

Still, on Tuesday, Eckert and Borbely criticized the proposed changes to the committee’s leadership, calling them a blow to FIFA’s pledges of reform, which grew out of the arrests in 2015. They also said the move to stop the ethics committee’s work, even temporarily, while new committee heads acquainted themselves with case files would result in long delays and risked “jeopardizing FIFA’s integrity.”

“It appears,” they charged in a thinly veiled accusation directed at FIFA’s president, Gianni Infantino, who was investigated but not disciplined by the ethics committee last year, “that the heads of FIFA have attached greater weight to their own and political interests than to the long-term interests of FIFA.”

In place of Eckert and Borbely, FIFA’s ruling council has nominated the Greek judge Vassilios Skouris and the Colombian lawyer Maria Claudia Rojas to lead the ethics committee’s two chambers. Skouris is the former head of the European Court of Justice.