RolandX - absolutely incorrect.

The Liberals, led by Dion,  attacked Harper as being incapable of grasping the apparently too-subtle-for-a-westerner nuances of Quebec politics. During the campaign that Dion lost, the Liberals repeatedly played up fears of the RISING anti-federalist sentiment in Quebec.

And, the Clarity Act, what you call Dion's masterpiece, was a panicked reaction to pressure from the then Reform Party to be proactive, since the Liberals had fairly recently allowed the country to  come within a few more fraudulent "yes" votes of splitting in two.

BQ and PQ support was still strong when Harper was elected, and the Liberals shamelessly played up fears of how the country was about to be plunged into crisis with a transplanted Albertan at the helm.

In fact, the exact opposite happened: whether by good planning or good fortune, Harper oversaw the ONLY modern period in Canadian politics when the threat of Quebec separation was not the overriding problem in Canada.