I have made my points on this in a few posts before so won't repeat much of those "Big Moment" vs "Big Picture" posts, although they have tilted more in favour of last night was the night to do it, and the risks are probably higher.
I don't know if anyone else saw the press conferences afterward but you could tell Sami was deflated -- just said he felt strange many times. Compared his moment to George St Pierre -- had the big fights in Montreal, electrified the city like last night, but St. Pierre won.
I still think much of the problem could have been solved with de-unifying the belts earlier. Back in October we could see a ground swell for Sami that had not been seen, and could also see a positive reaction for Cody. Plus you had the Rock factor as a possibility at the time. Why they didn't find a way to de-unify the titles a few months ago blows my mind - probably too late now to come up with something that makes sense.
Listening a lot to John Pollock of the Post recently. On Monday, after the RAW show, he said he was fine with the WWE approach of going with Cody - the TV analytics and the house show analytics have shown he has made a big impact so he was fine with Cody being given the spot, and figuring out some other path for Sami. But after last night, using the "Big Moment - Big Picture" theory, he thought they had just met this weekend and it was probably the time to do it.
At the end of the day I think last night was probably the best night -- but by not pulling it I hope this results in more quantity of good TV in the next 365, even though there is not that high.