The troubles for the Rizzuto clan didnt start immediately after Vito was put away. It started after Operation ColiseƩ, which was in 2006, where most of those guys were put away. And even then, the real instablity within the Montreal Mafia started with the death of Nicolo Jr. in '09. Dont know the reason why Mucci was shot in '07, couldve been involved, but cdn_wiseguy is right, Mucci's attempt was before all the real troubles began.