You've not run with pugs before, have you? I've had a DPS sprint by me and grab all the adds to the end of the path of Holminster while there was a new Sage I was trying to let get comfortable before I would heavy pull, so I'm having to rush after the DPS to get the adds simply because they didn't try to bring them to me. So yes, running around can happen in an attempt to get aggro, and it can sometimes be not that simple to get it.
