Jermaine Jackson says his family had a plan in place to help his brother Michael flee the country ... if MJ had been found guilty of child molestation back in 2005.
JJ told the London Times the plan was for Michael to head to Bahrain, which does not have an extradition treaty with the U.S.
He said a plane was on call to whisk Michael away if need be ... but MJ knew nothing about the plan. He says he thought the family could have convinced Michael to go along with it.
Jermaine told the paper, "If they were going to sit and crucify my brother for something that he didn't do, America deserves us not to come back here."