I made an entry on the UESP Console talk page, I'll just copy/paste that.
In game console, typing "GetPlayerTeammateCount" returns to me "Player teammate count > 3", but I have no idea who/what/where these teammates are. Is there a way to remove them or reset the player teammate count?
Does this have something to do with player factions/relationships? I use a few different addon followers, Inigo and 3DNPC mainly.
I have no followers either, I have tried "set playerfollowercount to 0" and also "set playeranimalcount to 0", both of these did not work.
I have also tried waiting in game for up to a week, in hope that the teammates would "get tired of waiting and go home", but this did not work.
Any help will be greatly appreciated!