Adrienne Clarkson (GG during the Martin minority government) said in her recent autobiography:
"To put the Canadian people through an election before six months would have been irresponsible, and in that case, I would have decided in favour of the good of the Canadian people and denied dissolution," Clarkson wrote in her memoirs. this did not happen because Stronach crossed the floor, temporarily saving Martin's government.
Source:
GOV. GEN JEAN'S CHOICE
The Governor General has every constitutional right to keep a parliament running if the other parties can present an alternative government. IF (that's a big IF) this government falls, I think its more likely that you will see Prime Minister Stephane Dion, or for that matter, Prime Minister Jack Layton than an election.
On another note, Harper has just announced this evening that the opposition will not get their chance to table a non-confidence bill on Monday as planned, and has moved their day to Dec 5th. The budget bill has been pushed back, and the CBC is reporting that the conservatives have backed off on the party funding adjustment for the time being, and may present that bill at a later date.
I guess that is a big oops!