I thought he was sentenced in 1931. An 11-year sentence was really nothing for his age, if only he didn't have syphilis. He was released in 1939, early because of his disease. If he was sentenced in 1931, he would've been released in 1942, if he served his complete sentence, while still pretty young. I don't see him simply walking away from the Outfit, especially considering that they became officially LCN in 1931, with the start of the Commission.