[MAIN SPOILERS] 'Fight every battle everywhere, always, in your mind.' - Little Finger Theory

I was thinking in the words exchanged between Petyr and Sansa this morning and came up with a theory on what may happen to Petyr. In the previous episode Petyr advises Sansa to fight every battle in her mind. This advice makes sense coming from someone who has gained so much with very little brute force, but rather through cunning, intellect, and scheming. Petyr lives in his mind and values it above all else... and that is why I think it is threatened. Petyr has been physically attacked by Stark's on at least 3 occasions, by Ned, his brother, and by Jon Snow, and yet he has never shown the slightest inclination to back away from their house. But I believe a mental attack may do the trick, and I think Bran may be the one to do it.

The scene with this mind-focused exchange between Sansa and Little Finger is broken by the convenient arrival of Bran, and I do not believe that is a coincidence. The narrative proximity of these two events leads me to think that Petyr may give Bran some reason "attack" him (as if he needs one after knowing LF is behind his fathers death, Aunt's murder, the war of the 5 kings which lead to his mother and brothers deaths, and also his sisters imprisonment). I think that Bran may take the non-violent threat approach of warging into LF, and use this as a means to banish him from The North or Westeros. I can imagine LF's reaction to be similar to Varys's disgust/fear when he sees magic performed.

Now I've used the phrases "I believe" and "I think" here, however I do think this is incredibly unlikely as the 3-eyed raven has been sort of peaceful and more of a watcher than anything else. But I think it would be a pretty cool way of giving Bran some purpose beyond just knowledge, and it would also be a great way to flex how strong he has become (warging one of the brightest minds in Westeros is considerably more impressive than Hodor).

Let me know your thoughts!