Damn it, Pip! I told you to keep hidden until you had a better idea of what was going on! It's pretty clear that Vault-111 are not flavour of the month with this particular faction. Pip should feel lucky that the Wanderer was pleased just to pistol-whip him.
I wonder what the problem was? I suppose that, if this is a pro-Institute universe, then inhabitants of Vault-111 may be considered just this side of pure evil!