Board member Pier Eringa : "We wanted Edwin to stay, but he had made his decision. We have to respect that. The last season does not reflect the entire period that he has been in charge of Ajax. The club has seen a lot of success, has seen a lot of growth, and gained international exposure. His tasks will be transferred to the remaining members of the board. Edwin will be available for the transfer and advise until August. We expect to announce a new Board of Directors after August 1. It's our ambition to add someone to the board with an Ajax background."
So he left by his own decision. But reading through this thread I thought people with pitchforks wanted him out.