I agree that its a possibility. Pro wrestling writers love to "swerve" fans. So they made it obvious that the "swerve" is going to be a Bully Ray heel turn. But the ultimate swerve to the swerve would be to have Sting turn heel. To make it even more heelish, or big time, it comes at a time when he was inducted into the hall of fame and acknowledged as one of the greatest wrestlers and babyfaces of all time.
I wrote about this scenario, and a few others, at my website. You can view the article here. Who Will Be Revealed As The Leader of Aces and Eights