When Greg Gatenby abruptly resigned from the directorship of Toronto’s International Festival of Authors earlier this week, speculation raged about what bizarre set of behind-the-scenes circumstances could have led to the departure of such a popular figure from one of Canada’s most high-profile literary organizations. The full story still isn’t known, and may never be, but the often-frosty relationship between Gatenby and Harbourfront Centre chief William Boyle seems to be at the center of the story.