I think you’re right, his conscience is going to come for him in a big way before this is all over with. But I’m sad about this whole arc, and a little pissed. I’m kind of hoping there will be some magical reason for all of this eventually, because otherwise it just looks like some really intense rivalry sprang up between Sean and Nick almost out of nowhere and that…makes no sense to me.
Like they’ve had their issues in the past and they’ve butted heads but they were in a really good place at the start of season five. Sean was actively protecting Nick and vice versa. So. I hope there’s a better explanation in the end than just “Sean got power-hungry” or even worse, “Sean was jealous about Adalind.”