Simon Cowell is considered a brainchild for more reasons than one and now "The X Factor" fans know why. Cowell offered not one, but two surprise twists in Thursday's elimination episode of "The X Factor." Last week, the show was left with the Top 12 and unexpectedly Cowell shocked viewers and the live audience when he announced that the judges realized they made a mistake and would return a contestant who was booted last week. "We watched the show back and the final 12 we're very happy with, but we believe we made a mistake with one act," said Cowell.In case the crowd misunderstood Cowell, the show's host Mario Lopez added, "We had 12 acts and now apparently we have 13...Welcome the 13 finalists!"