So (this may be up for speculation,) in the end of Fnaf VR, springtrap takes over/possesses your body in someway. (or he gets in your head) Then, if you play the Halloween dlc The curse of dreadbear, if you find a bunny mask (that look's like vanny's in the teaser) and wear is while holding up a springtrap plush, you hear a woman talking, as if she's talking to someone, but you don't hear the other person.
Game theory's theory:
Basically, The theory is about how glitchtrap can get into people's heads and get them to do is bidding.
Also, in the source code of scottgames, this is what it says: view-source:http://scottgames.com/
So, OBEY probably means something like, "Obey glitchtrap" or something. Vanny IS known as the reluctant follower