In the words Bowser and Blue (barely) put into his mouth:

  "Le déclin inexorable de la ville de Montréal
  C'est pas ma faute
  C'est la faute du fédéral!"

That said, it'll take a long time for the effect of the PQ on the economy (not their fiscal policy as much as the financial flight when separatism became "real") to stop echoing through the city. Desjardins does not an economy make.