Tom Benson, owner of the New Orleans Saints, set up an irrevocable trust which held a significant portion of his $2 billion estate. Recently though, Benson instructed the trustee of the trust to transfer controlof his pro sports franchises, auto dealerships, real estate, and banking interests to his wife, Gayle. Now, Benson’s daughter and grandchildren have thrown a flag on the play. Their stance: you cannot change an irrevocable trust.