Is there a silver lining to the Madoff fiasco? The Commodity Futures Trading Commission is reporting a sudden rush of crooked investment managers turning themselves in as Ponzi schemers. The phenomenon is being caused by investors who, spooked by Bernie Madoff's $50 billion dollar fraud, are now challenging their own fund managers on similar patterns of high returns. And apparently, some of their suspicions are correct. "They're throwing themselves at the mercy of the CFTC court," said the organization's acting director of the would-be Madoffs.