Erandur, the dark elf priest, wont talk to me after i killed his 2 friends inside the room with the staff. he just stands next to the wall with his magic out, and even if i use shouts to knock him out of the way, he gets hostile and tries to attack me. i even tried surrendering to him, but he just walks back to that same spot and gets stuck with his magic out.

I did that whole quest on a speed runthrough for the hearth fire dlc so i could buy a house. now im gonna have to do it over again, unless someone here can give me an explanation