User blog comment:Xilinoc/Ch. 617 - Return of the God/@comment-1747976-20150227012541/@comment-24726378-20150227153529

I felt it was yhwach who removed his restraints. He even said that he went and talked to aizen. He had to have removed the mouth restraint to be able to talk to him because he clearly isn't interested in that reiatsu talking stuff.