Sneaks can be hunted down and killed by other sneaks.
AC trolls can be hunted down and trolled by another AC trolls, he'll just run around him and say bad things about him and his allies will be unable to kill him too. This way everyone will scout everyone and they will just watch that stupid 2 bluesuiters running around.
Or he can be hunted down by
10 PE SS 300% EW fast shot
That can be parked on WM and wait till one AC troll appears to be used.
Also you can give bazooka to your non-BG friend who will shoot you and miss, and if dodger was in 40 hexes, he'll be hit.
Or you can throw plasma grenades on ground near him.
Or you can make melee tank in armor who will try to kill AC troll, but you will shoot your melee friend with explosive rocket when he's near to be sure that rocket will hit AC troll.