Yeah, would be interesting to hear what an immigration lawyer has to say about this. There are several people in Canada trying to do this, a couple has, while others (including myself) are scared to do it. I suspect that this is already happening and is one of the factors leading to high cut-offs(460s) that we are seeing these days.
Meanwhile, I understand that CIC has expressly said on twitter that if your points is low, then consider having your spouse non-accompanying, get PR and sponsor him or her afterwards.