This is an article by Jack Goldsmith that completely destroys Sheeran's version of the disapearence of jimmy hoffa: https://www.lawfareblog.com/are-claims-new-film-irishman-true

Within days of the disappearance, Sheeran told close associates that he had not been in Detroit when Hoffa disappeared. He also later reported that Russel Bufalino instructed him to turn over evidence to the FBI confirming his whereabouts that day (which he did) because he did not arrive in Detroit till the 31.