Olympics May Trump Canada's Afghanistan War Commitments

This is an interesting twist:

OTTAWA (Reuters) - Canada might not be able to extend the life of its 2,500-strong mission to Afghanistan beyond February 2009 because many troops will be needed to ensure security at the 2010 Winter Olympics in Vancouver, according to a document released on Monday.
[...]
Although the government has said little about whether Canadian soldiers will stay beyond February 2009, a formerly secret military briefing document prepared for Defence Minister Gordon O'Connor casts doubt on this possibility.

"Planning and mounting the Vancouver 2010 Winter Olympic Games security operation is a high priority activity that will represent a major commitment for the Canadian forces and will have a significant impact on domestic operations in 2009 and 2010," the document says.

"Security commitment for the Games could also affect the Canadian forces' ability to deploy a large number of forces overseas," it continued.
[...]
The report from top officials was made available to Reuters under access to information legislation. It was dated February 5, the day before the Conservatives formally took power.

link

So, when Harper spoke on the Tory motion to extend the mission last spring, whose timetable was he measuring the war effort by? Afghanistan's, NATO's or the Olympics'?

Third and finally, we are seeking to extend the mission of both the Canadian Forces in Kandahar as well as the efforts of Canadian military diplomats, development workers and police in the PRT, the provincial reconstruction team, for 24 more months. This mission extension, if the motion is passed, will cover the period from February 2007 to 2009 when we expect a transition of power in Afghanistan itself.

link

Additionally, when Harper addressed the house during the debate, he stated the following:

What we are asking for here is to extend the mandate in this motion for a clear two years. That would bring us to the end of President Karzai's term, and that is where the allies, which have been with us from the beginning, are by and large at today.

But, according to the Department of Foreign Affairs, Karzai's term ends much later than February, 2009:

On October 9, 2004, Mr. Karzai won the majority of votes in Afghanistan’s first presidential election and was elected to a five-year term as President of Afghanistan. He took his oath of allegiance on December 7, 2004.

Why did Harper mislead the House of Commons?