Can Volkswagen survive the diesel emissions cheating scandal? Probably. Will its stock ever get back to where it was before? That's another story. Shares of Volkswagen have plunged nearly 30% since the news of the automaker's Clean Air Act violations first surfaced last Friday. The stock is now more than 50% below the 52-week high that it hit in March. The departure of CEO Martin Winterkorn on Wednesday is helping VW in the short-term. The stock has rebounded from the 52-week low it hit Tuesday. But one brand reputation expert said that VW has to act quickly to find new leadership. "This is a mess. The CEO's resignation makes it more of a mess because it's a rudderless ship," said Richard Torrenzano, CEO of the Torrenzano Group, a firm specializing in crisis management for corporations. It's important to remember that Volkswagen was already in trouble before the term "defeat device" started trending on Google and social media. http://money.cnn.com/