User blog comment:Lia Schiffer/418: Deicide 20/@comment-1904799-20100902010856/@comment-1906999-20100902011615

I'm pretty sure that was just the hogyoku shining, even though it was on his face, it was his chest glowing in the next page. Gin touched Aizen's blade just a few chapters ago, and if he wasn't using it then, then I don't think he would of had a chance to activate it before now.

Even if he did, from my understanding, you have to actually witness him releasing it, which he definitely didn't have a chance to do yet.