The drummer sensationally quit the band in 2010, leading to a chain of emotional claims and counter-claims from both parties - and although he tried to rejoin months later, they refused his approach because Mike Mangini had already been given his role. They went on to release eleventh studio album A Dramatic Turn Of Events in 2011, inspired by the lineup change and the adjustment of dynamic within the band.

Portnoy, who's currently touring with latest project the Winery Dogs, told of his unhappiness after a fan met him at a signing session in New York last week.