The Worm Eaters (1977)

Herman Umgar a German hermit has an ability to communicate with worms One day the mayor of the town runs him off his property so in revenge he plants worms in everybodys food However these worms are a special breed of mutant worms from the Red Tide and when the people eat them they are transformed into giant worms themselves These wormpeople also become Hermans slaves What will the remaining do