Now Seth and Roman can fight over a who at SummerSlam. Maybe they get there through a tournament that happens on raw. But they fight at ss. Then towards the end of the match, triple h's music hits and he comes out. Seth is happy at first because he thinks trips is here to help him. When all the sudden, bam! He nails Rollins with a sledgehammer. Roman, who realizes what's happened, goes to pin Rollins but he shockingly kicks out. Trips, shocked, then gives the sledgehammer to Roman. He takes it, hits Seth, wins and becomes champion. After pretending to be confused, he shares a smile with triple h and they celebrate in the ring, finally cementing the double turn we've all wanted for months.
I would book the return of the World Heavyweight Championship like this:
The next night on Raw, Stephanie brings back the World Heavyweight Championship belt, Seth Rollins comes out demanding that he be crowned champion because he wasn't involved in the desicion at Battleground, but Mick Foley announces that there will be an Elimination Chamber match at Summerslam to crown a new champion. At Summerslam the final two comes down to Rollins and Reigns and while they are both down, Triple H returns with a sledgehammer, enters the chamber and knocks out Seth, Roman and Triple H smile at each other and Roman wins. The next night on Raw; Roman says that he tried everything to make the fans respect him but they booed him all the time and says that only the Authority cares for him. Seth Rollins comes out and cuts a pipebomb promo and says that Roman was hand picked by Vince. This turns the whole locker room against Roman and brings realism into the storyline, making it The Authority vs The Fans and Roman vs The Locker room. All leading to a triple threat match at Wrestlemania between Roman, Seth and Finn Balor, with Balor winning the title.