I also used an imp in an assault on the goblin camp. I couldn't leave combat either no matter what I did until I killed my own imp. There was no friendly fire before that. Now when I resummon any of my familiars they start out as automatically hostile.
I killed Gale in camp when he snuck up on us as hostile and I'm unable to use the scroll of true resurrection on him.
Wylle the blade of the frontier died fast in the goblin fight outside the walls. Can't bring him back. Looks like his storyline is done. How is he able to use a rapier anyway? Is he a secret drow?