FLOWERY BRANCH — New coach Dan Quinn believes the Atlanta Falcons made the right decision to cut ties immediately with Prince Shembo after the linebacker was arrested last week for killing a dog. The team waived Shembo last Friday, the same day he turned himself in at the Gwinnett County Detention Center on a cruelty to animals charge. “We felt it was best for us to handle the things we could on the field and then also for him to handle the things he needed to do off the field,” Quinn said Tuesday after the team’s workout.