Had to research an interesting regulation - s.117(1)(h) which allows someone to sponsor any relative regardless of age ... if the sponsor does not have a spouse, common law partner, conjugal partner, child, mother or father, a relative who is a child of that mother or father, a relative who is a child of a child of that mother or father, a mother or father of that mother or father or a relative who is a child of the mother or father of that mother or father - who is a Canadian citizen, Indian or permanent resident or whose application to enter and remain in Canada as a permanent resident the sponsor may otherwise sponsor...
Given my difficulties in parsing this section I turned to the case law. The following should be of assistance in determining whether an individual can rely on the regulation to sponsor someone that doesn't fit the confines of the 'family class':
http://www.canlii.org/en/ca/irb/doc/2006/2006canlii52296/2006canlii52296.html
http://www.canlii.org/en/ca/irb/doc/2005/2005canlii56945/2005canlii56945.html
http://www.canlii.org/en/ca/irb/doc/2006/2006canlii52301/2006canlii52301.html
Justice Gibson's decision in Nguyen here.
Looks like something that will only cross my desk once or twice during my time practicing law.