Wait. I got it!
It all makes sense now.
CBS has done everything in their power to make us think that they goofed and let the cat out of the bag that Sheriff is RJ. Well, they'd have only goofed if he was. He isn't!

But he is still alive. No way he got burned to a crisp when he was standing with Smith, Bertram, and Jane and they all fine.

He escaped. He may even be helping Jane but that's beside the point.

I think the scenes we've seen with him in the upcoming episode. Running into glass window, running through cemetery, etc., isn't him running from Jane, but from either Bertram or Red John.

If Bertram is NOT Red John, then he is high ranking member of Blake. If he is, well, there you go.

I think Bertram could be RJ, but I think a better twist would be Michael Kirkland bc of the voice and the out-of-left-fieldness of it all.

So I think that while Sheriff definitely shows up in the next episode, his running and bullet holes are the work or Bertram or RJ, probably Bertram.

Either way, I think that either Bertram or Michael Kirkland is most definitely RJ.

We won't know for sure until Sunday!