Are those wily Weinsteins, who are chopping “Grindhouse” in two for foreign markets, turning Jewish actor Zach Braff into a Latino to better sell “The Ex,” his comedy opening next week? (As we reported a while back, “The Ex” was known as “Fast Track” back in December, when it opened to poor reviews and business for a one-week Oscar qualification in Los Angeles). Starpulse quotes the actor on his MySpace blog: “I don’t know why they made me so tan on the poster for The Ex. When I first saw it I thought it might be the South American poster, since we all looked a smidgen Latin. Or… as Latin as I’m ever gonna look..I kind of look like that kid who played Ben Stiller’s supposed Hispanic son in Meet the Fockers.”