That's the only reason anybody I know that has ever googled "Santorum" also.
And seriously, given that The Daily Show has pumped this gag several times (the Mitt Romney v. Santorum chocolate box thing last night being the latest), with its millions and millions of viewers, to say nothing of all the other publicity that this gag has gotten, I think it's reasonable to say that this "gag" -- the collective redefinition of the word Santorum in response to perceived bigotry -- is actually a bigger deal than Rick Santorum the (fringey, extreme, minor) Republican politician.
That would likely change if Santorum actually began to be a plausible contender for the presidential nomination, but that's extremely unlikely.
I think the maximum response from Google appropriate to this issue would be one of those explanatory disclaimers in the sidebar, like they put next to the photoshopped gorilla photo results when you image-searched for Michelle Obama.