The former president of The Greenbrier, who resigned after less than a year at the famed resort, has filed a $50 million lawsuit against Florida-based railroad giant CSX Corp., claiming he was forced out of his job for trying to end "fringe benefits" enjoyed by CSX executives.Paul Ratchford filed the suit Friday against CSX, The Greenbrier's parent company, claiming that CSX President Michael Ward fired Ratchford after he tried to stop company executives from enjoying free rooms and meals, discounted merchandise and even free medical exams at the resort.