User blog comment:Savalric/Feeling bad for Urahara/@comment-24107489-20131114062948/@comment-11051098-20131114144543

Yamamoto decided to break the rules, and he was one of the most strict ones, being the Captain-Commander. Shunsui is much more loose on rules, I think, so it wouldn't be a surprise if he decided to force through a repeal of the exile of Kisuke, and also Yoruichi and Tessai.

All 3 of them are very skilled captain-level Shinigami. 1 highly intelligent researcher, 1 Shunpo/Shunkô/hand-to-hand combat master and 1 highly skilled Kidô practitioner. I doubt Shunsui would want to keep them exiled if he can change that, cos they woud be very valuable for the Gotei 13 with their skills.