This blog is no longer associated with the Blogging Tories, probably to the relief of some [ ;-) ].
As to the "why", while I still consider myself a "small-b" blogging Tory, I don't think I can necessarily vocally support the Conservative Party of Canada for a number of reasons, and would like to promote progressive conservative polices irregardless of the political party. I find myself questioning decisions and policies more often than not; a non-stop whine-a-thon, I guess, if you're of an opposite point of view.
In short, I don't think the Conservative Party is my federal political home any more. Maybe it will be again, one day.