Bryan hasn't been pushing to team with Orton until now. He's been picking fights with him. The driving factor for Bryan is him wanting to prove himself to Kane (who has a sort of father role in their dynamic) and that he can do fine on his own. That mixed with Randy Orton's egotistical lonewolf character makes for a battle of wills.The Shield needed to lose to further the story. You could tell they had no idea where to go, the amount of times we've seen The Shield/Hell No+orton is rather high. Now The Shield has lost, there is a reason for them to continue having matches. Notice how Bryan has been shoving Kane away, wanting to team with Orton? It all smells of a heel turn at the PPV. Then Bryan is without Kane because he's pushed him away, and now Orton/Bryan have a programme.
One of the two will go heel at or after payback. And judging by the results here it will be Orton. Makes more sense for the snubbed veteran to turn heel on the up and comer than the up and comer who just scored a major pinfall.