Leo loved it. Tobey hated it. But what really went down as “Don’s Plum” — a never-released 1996 movie — ballooned from short film into feature-length disaster? Find out the untold story, including Tobey Maguire’s “extremely uncomfortable” dialogue, in this episode of “The Curse of Don’s Plum.” “Everything was better, man,” filmmaker Dale Wheatley said through tears. “Everything we promised was on the screen.” After a successful MGM screening, an offer by super-agents CAA, and rumors of Miramax wanting to distribute the 72-minute film, it suddenly all fell apart in true Hollywood fashion.