Bases are loaded, one out. Batter chops a grounder back to the pitcher who throws home for the force. The batter/runner is frustrated with himself and instead of running to first, is still standing in front of home plate - apparently giving himself up. The thrown ball comes in and nails him in the back, preventing the catcher from catching the ball. Do we have any sort of interference here? He hasn't been retired, he doesn't intentionally jump in front of the ball, and the runner from 3rd scores on the hit batter/runner.