Remember Corey Clark? He was the disgraced American Idol 2 contestant who failed to disclose to producers that he had been arrested for allegedly hitting his 15-year-old sister. Well, this story has a happy ending sort of. Two misdemeanor assault charges have been dismissed against the Justin Guarini poser, but the 22-year-old pleaded guilty to "obstruction of legal process." He was sentenced to six months of unsupervised probation.