So since the next episode is pretty much confirmed to be a flashback episode,how about this. The entire episode is about the twins life until stanley is sucked into the portal and it shuts down. Gravity returns to normal (again) and stanford is left
tags: gravity falls, stanley pines, not what he seems, gravity falls theory, sad, flashback episode, stanford pines, original mystery twins
original: https://chrossrank.tumblr.com/post/117043078585