"An untimely end" probably another bug.

[Stewbert]

Source: PC Gamepass

What might have caused this bug was party member Marius got downed at a big encampment of bandits and I dipped and Fast Traveled to made it back to the city to continue the quest chain. At this point im under the church with only Kai, get to Ygwulf and picked the option to hear the companions out on what to do.. Dialogue ends and quest is stuck unable to decide Ygwulfs fate. 

I read others say this has happened to them and they ported back to base camp to "Retrieve" him. Tried that and nothing. Obviously I can walk up behind Ygwulf and attack him but that isnt what I wanna do at all.