Jermaine Jackson Claims Rape Accuser Ruined Son Jafaar's 'Michael' Biopic Promo

Jermaine Jackson feared claims that he raped a woman would tarnish not only his reputation, but also his son Jafaar Jackson's big break in the "Michael" biopic ... TMZ has learned. In new legal docs, obtained by TMZ, Jermaine said he was unaware of…