The 62-year-old rocker-activist says he was told a local faction of the International Alliance of Theatrical Stage Employees union planned to picket the show.
Young and his wife are honorary lifetime members of the union, which is striking against The Forum's owner, Faithful Central Bible Church, because of contract disputes.
Young, whose hits include 1989's "Rockin' in the Free World," says he is "extremely disappointed to have to choose between satisfying my fans or backing my brothers and sisters of the IATSE."
