As I stated in an earlier thread Bernal and the Vander Weerds are definitely going back,I work for Matt Mitchell and he hasn't said anything about coming back.
As far as Demon and Faas is concerned,unless they get rides from someone back there,I doubt they will be back,since I would be surprised if the Alexander's would bring their normal rides East.(but who knows)
I highly doubt you will see Spencer,there again unless he has a ride from back there.The Chaffin team he normally drives for has been having a lot of bad luck this year with engines and other problems and knowing Bruce Bromme as well as I do,He isn't going to tow back there if he doesn't feel they are on top of their game.