AZALEA — Galesville Dam will be blown up next month unless a federal judge in Los Angeles steps in and throws a monkey wrench into the works. Cut! The South County dam will stay intact. Its destruction will only be a cinematic sleight of hand. The dam and the Galesville Reservoir, along Upper Cow Road eight miles northeast of Interstate 5 up a canyon, have been chosen to play a starring role in a Hollywood film about a crazed Marine veteran and his cohorts hellbent on destroying a dam. Douglas County commissioners today signed a contract with Tipping Point Productions …