The following contains a potential SPOILER for the Universal Championship Match between Brock Lesnar and Roman Reigns at SummerSlam.
According to a report from Rajah.com, one idea that WWE officials have been talking about is to have Roman Reigns finally get a clean win over Brock Lesnar for the Universal Title at SummerSlam, only to have Lesnar viciously attack Reigns immediately after the match. This would then lead to Dean Ambrose and Seth Rollins coming out to help their Shield brethren, and the reunited Shield would then finish off Lesnar with a Shield Bomb and write him off of WWE programming, at least for the time being.
The hope is that a finish like this would get cheers from the fans instead of the typical reactions that Reigns usually gets.
It should be noted though that this is merely a RUMOR at this point. Plans could always change between now and SummerSlam.