You can actually pull up dialogues in youtube with her if you want to confirm. He fears Orin because he is a smart man. He knows Orin is crazy, but not entirely stupid. She will try to manipulate someone else to kill him. Which can be the player character if you choose that, though I suppose many people don't go that route because Orin kinda sabotages herself immendiately by abducting one of your party, so most people rush to rescue them instead of trusting the psychopath to keep her word and not kill them. Orin is bitter Gortash didn't trust her from the very beginning and actually wanted to cut out the Bhaalists out of the dominion scheme, he told Ketheric as much. But then Gortash realized he needed Bhaal's Chosen as the Elder Brain was already breaking free with even two of the Chosen alive once you dispatch Ketheric.
Thank you for the info. Although one thing that always confused me and something that I have to bring up again in light of this info was that when Orin replaced Urge, there must have been a brief period of a Netherstone not controlling the Brain, so how come this is something that is never brought up and acknowledged as a big turning point? What is brought up is that Orin was/is untrustworthy but that would only influence who rules in the end, not that the Absolute fails. It is clearly established that all three Stones must be used to control the Brain, but one person using two or more only becomes an impossibility once the Elder Brain evolves into the Netherbrain.Therefore a loss of control over the brain, however brief, must not have slipped by a Gortash (and Ketheric) who gave his word to not disrupt the Urge's work. And it is never confirmed just how far away the Urge was replaced - one can only assume the Temple of Bhaal since that is where the Urge is put on display, and the distance between the Temple and the Brain was quite massive at the time, as the Brain was at Moonrise Tower. (Note: I couldnt find any info if the corpse of the Urge is Speak with Dead viable and if you can ask him where he died, and I wont be anywhere near my PC for some time to check myself).
In one case, a Chosen loses control of a Shard and nothing happens. In another, the Brain immediately starts acting up. With that inconsistency in mind, it makes me wonder why Orin would even accept Gortash's bound - the psycho she is, she could have killed Gortash on the spot (and somehow steal Ketheric's Shard) and dominate the Brain alone. Which would then force Gortash and Ketheric to go after Orin, and then Ketheric himself would betray Gortash if they are successful... However, the threat of the Brain being loose would have for sure convinced even Orin to accept any bounds by Gortash. (Note: I couldnt find any other info on this either - I am assuming the bound is voluntary, else Gortash could just stop every existing murder attempt on himself).
