User blog comment:Xilinoc/Ch. 547 - Peace from Shadows/@comment-8669536-20130904133657/@comment-6657474-20130905233938

Let's be realistic, Shunsui isn't likely to use his bankai at this point, knowing full well that Haschwalth would likely steal it the moment it was activated. I can only see him using his bankai if A: Haschwalth informs him that he has no intention of stealing a Shimigami's weapon, with such an action is beneath his dignity and he wants to prove that even with a bankai, Shunsui is no match for him, and then backs up his statement by destroying his own medallion; or scenario B: Urahara shows up with a way to prevent the Quincies from using their medallions anymore. The former scenario seems more likely than the latter, as we all know that such battle tide turning events almost never occur until the last possible second when all hope seems lost.