I read the Sheeran book when it first was published. If I recall correctly, Sheeran told his biographer that he was in the place where Hoffa must have been whacked, but did not actually witness the murder, nor did he kill Hoffa.
I will double check, but he said he shot Hoffa in the back of the head. There were other guys there, in another room, they were apparently there to dispose of the body.
