In a move that could dwarf the massive municipal bankruptcy of Detroit in 2013, the government of Puerto Rico indicated Wednesday that it would begin a bankruptcy-type process to restructure some $73 billion in debt.

Puerto Rico, which is barred under federal law from seeking Chapter 9 protection in a U.S. bankruptcy court, instead filed a petition for relief with a U.S. district court in San Juan. Proskauer Rose restructuring partners Martin Bienenstock, Scott Rutsky and Philip Abelson in New York are working with Hermann Bauer of San Juan's O'Neill & Borges in advising The Financial Oversight and Management Board for Puerto Rico, according to the court filing.

Bienenstock (pictured right), who led a team of lawyers fleeing the soon-to-be-bankrupt Dewey & LeBoeuf for Proskauer five years ago this month, serves as chair of Proskauer's business solutions, governance, restructuring and bankruptcy practice. He did not respond to a request for comment. The American Lawyer named Bienenstock one of its Dealmakers of the Year in 2015 for his role representing certain Puerto Rican governmental entities on their debt restructuring efforts.