I don't think your last sentence is fair at all. People leave companies all the time for a number of different reasons. To assume a particular person leaving is a sign the team is a bad place to work is a giant stretch.
It's the latest in a striking rate of turnover in the entire organization. The sales, marketing and sponsorship departments seem to turn over completely every 18 months. It's a 6-year old club that has already had 4 chief executives (Pernetti, Glick, Patricof, Sims).