Noah
If I were you, I would. Somehow I doubt reasoning with a pissed off telepath is going to do much good.
That's good. Hopefully he hasn't left but, if he has, as long as he can defend himself he'll hopefully be okay.
See, there's that, and then there's the morality issue. I had zero problems taking out a horde of zombies when they were mindless, infected bodies hellbent on eating me alive. I do, however, have problems taking out a horde of zombies when they're just trying to find shelter for the night or protect themselves and the rest of their group.
Now, don't get me wrong. I'll still torch them and deal with my guilt later. But the more human-like they start acting, the less I think people in general are going to be willing to fight back.