That's true. It seemed Matt Walker left for good in 2012, only to return behind the kit a year later. Even Morrissey released this statement on June 3, 2012 regarding Walker:
"Our little covered wagon has lost drummer Matt Walker, who was eager to bring his term to an end. No bargainings could persuade him to stay, and his interest drew its last breath at Stockton. Behind the kit, Matt was a greyhound unleashed, and his great work on Years of refusal will always and forever speak up in his favor. His exit is sad, but he had no wish to continue, and a branch falls away."
I'm hoping Alain changes his mind and comes back again.