@EVA_01: Hidan didn't seem to need the rest of his internal organs for his brain to function considering he kept yammering when he got decapitated or had much of his body blown up by Shikamaru. It was only lack of nourishment that finally did him in. If Byakuya had any attacks that could completely wipe out Hidan's body, I would stop right here and agree. But considering the majority of the shinigami's attacks revolve around cutting/ slashing his foes via his zankupatou, I can't go through with this.
As for the thread being locked, you have me and one other person arguing in favor of Hidan winning via a battle condition technicality. Unless all posters agree to the outcome, I'm not locking this.