Manya thought about the whole thing.
"It's one of them demonic contract things. Demons are notorious for trying to wring out a profit in all the contracts, so it's not hard to see someone like Thalia," That is, someone who is a total ditz. "...end up getting the short stick."
The name didn't mean much, nor did the title, but he could see a connection in the method used.
"They need Thalia's body - intact, if possible. But before that, they need a human sacrifice to break down the control she has over them. While that's around, I don't think the demons have much power outside of this basement, maybe the whole house. I'm guessing one of us is the sacrifice. Once that's done, Deanna will possess Thalia's body properly, and nothing would be able to stop her since she's now anchored to the real world. If we kill her, she'll just respawn."
Imagine a player, who did not have to suffer DAs, who could die and return as many times as needed, and who was far more powerful than anything any other player could throw at them. That would be the ultimate result of this whole mess. But then, Ivan wasn't asking if he bought the explanation - he was asking if he believed Iordin. Manya stared at Iordin with a hardened expression.
"If a sacrifice is made and the demons are freed, it's going to be good for you - your kind will be able to do as you wish. So why are you so intent on staying a servant?"
Iordin's red eye blinked once, as he turned to look at Thalia once more.

...he has given up hope.
Manya narrowed his eyes. "Given up hope on what?"

Given up hope on rebellion. Do you know of the Other Side? Strong demons rule, and the weak suffer. No mercy for the likes of Iordin. We take offers of humans to come to this plane willingly.
The automaton demon paced slowly, turning away to look at the door in case another patrol approached.

If we fight, crusaders and zealots come, smite us back. Suffering here, then suffering there. Much better off as servants than becoming kings, and failing.
Manya narrowed his eyes. "But Deanna could be strong enough to ruin entire armies. You'd rather be a slave?"
Iordin didn't even hesitate when he nodded.

Only Deanna. Others will be weak. Will be killed. Deanna is strong but can be sealed away. Demon's life is of pain, and suffering, and cruelty. He is done with it. He just wants to spend his life as a servant.
He looked at Manya, and his blank face showed no expression, but determination and focus.

Don't question his freedom, his right. He finds happiness serving humans. He means no harm. Yet he is reviled and hated by the likes of you. Don't believe him, but he will still work to save his mistress.
Manya was quiet, unable to really answer to that. It would seem that he and Ivan weren't too different in that Manya had placed a minor Black Magic curse on the demon that would immobilize hm again should Manya will it to happen. They had their bases covered, so perhaps they could trust the demon...
Or if not trust, then use him. He glanced at Ivan and nodded his head once. "No choice, really. And I think he means well. He could have sold us out five times over by now. Just don't make any deals or promises with him."
Manya turned to face Iordin and gave a curt nod. "You're in the clear...for now."
And with that, he stepped back to lean against the wall. He needed to recover, but he also needed to think. They could formulate a plan, something that could help in busting through the demon lines and getting out. But then Thalia...
Darn it. They were going to have to save her too, it seems. She was innocent and caught in the crossfire, after all. Besides, they needed the gold.
"Alright then. Huddle up, boys. We need a plan..."
And so begins the plotting, the scheming, the escape and assault plan. Time to get out of here.