After retiring from football he became a business partner and advisor to Edward J. DeBartolo Jr., former San Francisco 49ers owner. As DeBartolo became more involved in the casino industry, he relied on Muransky as a confidant. Muransky testified under a grant of immunity as a government witness in the March 2000 trial of LouisianaGovernorEdwin Edwards, mainly about what DeBartolo had confided to Muransky. DeBartolo was the only extortion victim who claimed to have been extorted directly by Edwards, but Muransky could not provide direct testimony about private meetings between DeBartolo and Edwards. Muransky has continued to pursue business interests even after the controversies about DeBartolo have waned.