Already voiced my opinion in another thread but here it goes again, this time with a little more detail and explanation to my logic as most will disagree with this...
Firstly...Bryan's character...
If it was a "plan" to have AJ and Bryan split up so he can hunt for the WWE Title then she helps him win, just take a step back for a second and think about the huge flaw... Bryan broke up with her because he lost in 18 seconds at WM. Now as we all know WWE does like to think we the fans have memory loss, however look at Bryan, he's a wrestler who goes out to prove he is the best. If the "plan" was to lose the WHC quickly at WM to go after the WWE Title then that conflicts with Bryan's character as he would never want to go out and lost a world title in 18 seconds on the biggest show of the year. In order to not destroy Bryan's character they would have to incorporate that after the loss he and AJ made a plan etc... The result is it creates more hard work or takes something away from DB.
Kane's Involvement...
Now this could be being way overlooked by many and Kane is involved for no other reason than they have nothing else for him right now and are just trying to throw him in to the mix. Not the smartest idea but plausible none the less. On the other side of things Kane may cost Bryan as he's about to win. This to me is the logical choice. Do not have Kane in the match, have him just cost DB the win to pull DB away from the title picture briefly and that way it doesn't hurt DB to take a loss. AJ then could be taken two directions, happy as Punk retained or she can begin to show feelings for DB again as he's being beat down by Kane.
AJ supporting Punk...
Right now it would appear she is interested in Punk however his interest in her is minimal at best. A few options from here, she can keep trying to help him and he not want it, she can help him retain over DB and Punk notice her more or she can double flip and screw both guys to give Kane the title briefly.
The outcomes...
AJ sides with Punk and screws Bryan out of winning the title, Punk and AJ side together and turn heel.
AJ sides with Bryan and screws Punk reuniting her with DB.
AJ sides with Kane in a hugely unexpected twist.
In my opinion her siding with Punk is the best option. As I stated earlier in the post her going back with Bryan needs explaining, it could be as simple as Bryan realised she was useful and took her back. That's fine but say goodbye to your manhood DB because he will have taken back a girl who ruined WM for him and cost him the title. It also goes to show DB couldn't do it on his own but needed AJ's help to win, say goodbye to your credibility as a champion and one of the best wrestlers.
She sides with Kane then creative need to put in a hell of a lot more work, do a lot more and really need to think as to why and how it makes sense. Did Kane approach her, did she approach him, why did her pick her to help him etc...
The Punk and AJ alignment is the smartest but again, credibility of being the best in the world disappears if she starts helping him win matches WITH his blessing.
In other words this is interesting as a fan but if you look at the characters and what they stand for then the best result is take AJ away from DB and Punk as it just taints who they go out and say they are, two of the best wrestlers in the world. I mean really how great can you be if a cute chick like AJ is having to help you retain the title every time?