Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-77.3.98.176-20140311185231/@comment-24580931-20140312130826

That is also a viable theory but it would be too easy then to defeat nogitsune since all they have to do is let the Oni stab him and that's it. Nogitsune is dead and Stiles is okay which seems too easy of a solution. The more dramatic one is they cannot destroy Stiles' body without also destroying Stiles's spiritual residue or what-/whoever that is they unwrapped. So they would likely have to be careful not to damage his body too much before they expel Nogitsune out of it in order for Stiles' spirit to inhabit it again. :)