[X] [Goetrin] Disgrace. Graf von Saponatheim will be sending a representative to the town, and you expect they will be eager to be seen 'cleaning up' the town. Goetrin will likely be stripped of command and sent home in disgrace, tarnished with this failure in the eyes of his peers.
[X] [Edel] Incompetent. You will make the necessary reports through the cult hierarchy to make it clear to the Arch Lectors the scale of Edel's failure. Likely he will be quietly 'promoted' to some forgotten corner of a distant abbey and a more appropriate high priest appointed. Perhaps Sigiwalt would like the job.
[X] [Teugen] Repaid You will have a quiet word with the councilman, and make him see the wisdom of burying the hatchet. His wealth, and his connections among the nobility of Reikland and beyond, will be of great help to you and your agents in the future.
So, there are degrees of culpability here. Goetrin and Edel weren't knowing aiding and abetting a Chaos Cult, but they still interfered with a major investigation and it nearly led to a Cult opening up a portal in the Empire's heartlands, and entirely out of self-interest or grudges. They didn't commit crimes worthy of death, because they had every reason to believe the ones involved weren't up to anything wrong, but they did allow personal interests interfere with a legitimate investigation, and that can't be forgiven, this is not okay. Ruin their careers, make sure there's an eye on them, but they get a chance to grow the fuck up or at least fuck up in a way that warrants burning them.
Teugen... Well, he failed to cooperate, but that's the limit of his culpability here, he didn't actively interfere with the investigation, he just stonewalled at every turn and used Procedure against us. That's not great, but it's a chance to increase our dude's power base in the face of someone he's got by the balls, and we just saw here how bad it can be if you don't have actual power behind your badge and fancy hat.