I don't think his body is being held by the force that he created, only by the darksidish hate which he created, which I think is two different things, you know, keeping his body alive by his hate, which fuels the DS...could be way off though...
I think he is the SL...why? Because that seems like it is the top dawg class, and since his info hasn't been revealed yet, as well as the third one, i think he is the more main villain, LA wanting to create a little suspense as well as speculation by revealing him first, instead of last...