I know he's done it before. It's more like a 96% of the time rule. Every once in a while, they want something different to happen after the match, but still want Kane to win. So he blows the ringposts beforehand.
"You gotta hate somebody before this is over. Them, me, it doesn't matter."
"Hate, who do I hate? You tell me."
"Who do you love?"
-Wintermute to Case in William Gibson's Neuromancer
There was also a loud "BA-TIS-TA" chant during Kane/Snitsky. Gotta love the wave during a MAIN EVENT!!! Count me as not impressed or entertained by the ending of Kane/Snitsky. Here's my reaction: ok, so what?