i think it should work fine as long as he gets out of the encounter alive, either by Roe being too injured or Roe letting him go without Zillah having taken over them before
but we've had some bugs before where for example Chris would die no matter what you did unless you persuaded Syd to help him
try choosing [[Take out the demons now.]] when at Raum's hideout, thats the option that SHOULD get him sacrificed later (not instantly!!)