http://www.kslaw.com/library/pdf/guidelines.pdf
I would definitely tend to agree with the advice that they probably won't come after you. And even if they could, the legal logistical costs and associated uncertainty about the outcome would likely render any attempt unwise.
BUT again, outside of our dealings with the US, collection remedies on foreign judgements vary and depend on any reciprocal and multilateral agreements existing between Canada and the particular country you are living in.
As you can see by the above link, even if Canada does have an agreement with the country you are living in, various limitations on the agreement and court legislation such as restricted SOL's may inhibit any transferred enforcements. For example, the 2005 Hague Conference on the multinational enforcement of court judgements doesn't extend to consumer agreements.
It's impossible to be more exact since you didn't specify what country you are in. Call your local court office, but they too, may not know any specifics.
This is not to say that you shouldn't try to settle on moral grounds though.
Ray