If Abyss has been kidnapped by the WWE, making this quest start to trend would be the best way to find him. Cole would be happy to acknowledge on camera that they have him caged up somewhere, so long as that gives them control of the trending phrase. Searching for him this way is definitely worth a try.
A heel vs. heel match will never main event Wrestlemania! That's nuts! In any event, it's impossible to predict what the Wrestlemania main event will be in September. It could be Goldberg vs. Gillberg for all anybody knows.