no i don't believe it is because if you look at blue hev suit guy's discussion it mentions that he looked in hammer and didn't find anything. i believe the people who have seen ghosts might just have the v1 installed as i did also see a ghost in v2 and i also have v1 so there's a high chance that it's just v1 following you between maps as there is a lot more then just a map that's included in the mod