I’ve heard they’ve been asking a few Directors to take over on “The Exorcist” prequel, now that Paul Schrader’s been shipped home in an unventilated box. Today, Variety reports “A Nightmare on Elm Street 4” helmer [we’ll that’s about the closest thing to horror he’s done], Renny Harlin, will be doing the re-shoots. Harlin replaces Paul Schrader, who dropped out last month as director of the prequel to the 1973 film due to creative differences. Schrader’s name will remain on the film as director. The movie traces the story of Father Merrin back to his first encounter with the devil in Africa and stars Stellan Skarsgard, Gabriel Mann, Clara Bellar and recording artist Billy Crawford. Harlin’s got $8 million to work with for the re-shoots. But Harlin’s going to save “Exorcist”? Harlin?