The “Duck Dynasty” controversy just got a major shot in the arm. Actor Charlie Sheen exploded on Phil Robertson for the reality TV star's totally non-winning comments on homosexuality. In a long rambling message on Twitpic Saturday, Sheen calls the "Duck Dynasty" star "Mallard brained" and a "shower dodger" and tells him his comments were "abhorrently and mendaciously unforgivable.” "The idea that you have a job outside of dirt-clod stacking is a miracle," the "Anger Management" star writes. "Shame on you. You're the only surviving brain donor I've ever known." Robertson has received a lot of criticism for his comments...