User blog comment:Godisme/THE LOST/@comment-1752488-20111208000810/@comment-117598-20111208224439

There probably isn't going to be a lot of information. He activated Bankai, a shinigami power, in human form, which can't be done. So there's speculation on what's really happening, what powers he's using and how he's bypassing powers without the prerequisites for them. Right now, it just seems like he's a mashup of human/shinigami/hollow who can access powers in any form. But no, I don't think Sword of Scaffold was his Zanpakuto. Its still his Fullbring. He's just accessing a Bankai form through, yet, unknown means.