There's a reviewer at 411 who just said he thinks Bryan was supposed to get the belt all along at WM 30 and the RR 2014 was just a swerve to get Batista over as a heel. Dave has been mentioning lately that the company has been trying to get over the idea that they always intended to push Bryan from the start when it's been said time after time that it was not the plan (including on their own programming) People are still believing now and in probably 10 yrs or so it will be fact
Bryan definitely would have had the title at some point in 2014 even if it wasn't in the plans at WM 30 originally. I would say that the second Punk left, the decision was made for Bryan to get the belt, because that next week they shifted all focus to him and reignited the feud with HHH that had been phased out in November or so. It seems pretty clear that the specific plans became clear almost immediately after Punk walked out.
A lot of happy accidents happened right at the same time:
Punk's walk out
WWE's pettiness to stick it to Punk and replace him with the other big indie guy and give him what they never gave Punk
Batista's disastrous return
Orton's DOA title reign
That Michigan football game doing the Yes chants
but that decision was clearly made right after the Rumble. People always talk about the terrible reaction to Batista's win, but people seem to forget that the Orton/Cena match that night was met with CRICKETS. Fans did not give a single fuck about Orton as champion and didn't even pop for all the finisher spam and kick outs. It was the same when Orton won the TLC match in the first place to win the belts.