WWE SummerSlam: How can WWE pull a swerve on the fans?

Brie Bella vs. Stephanie McMahon

This has been a pretty fun feud so far. Ever since Brie quit at the Payback PPV, McMahon has made the lives of both of the Bella Twins a nightmare. She put Nikki through numerous handicap matches because of her sister’s actions. Eventually, Brie returned and got some revenge. Stephanie would return the favor over the past few weeks as well.

The swerve here is a pretty obvious one: Nikki becomes frustrated with her sister and turns heel. If this happens during the PPV, she could come down to the ring in what would look like an attempt at assisting Brie, only to side with Stephanie and attack her sister. The match would end in a DQ, but it would set up an interesting match next month. Maybe Brie vs. Stephanie and Nikki?