Hence why Tyrael is going to try to Bind Rathel to him; this keep's Khan's rune intact while also making sure that Rathel doesn't try to kill himself or get sent to the Inferno. It's a bit of a pain to force his will in Rathel the whole time, so he's going to knock him on the head until Rathel isn't conscious. That way Satori can enter Rathel's mind and keep him occupied until this mess get's sorted.

Anywho, I'm going to go to bed. I'll make my edit, just remember that Lucilia is still hell-bent on killing these demons. Someone may need to keep her restrained, since she's going in her evil-forest mode.