They do that sometimes, yes. It actually makes it more interesting, because it makes the assassins have to do different behaviors to blend in.
I agree, Assassin Hunt is a seriously awesome mod when you have the people. The Marins used to play it, and we had some of the best times there. I would definately try to join in if you set up an event for it.
![Cheesy :D](https://www.fsegames.eu/forum/Smileys/default/cheesy.gif)