If I had the means, I will return to canada as soon as possible. The VO is now looking for grounds for denial, to the extent of forfeiting citizenship, or whatever legal status he has in canada. I will not take the risk of justifying something that cannot be justified. They can always refuse to believe. They should have asked for specific documents.... they have not, they do not know of any. Because you also can change your mind anytime and they have no control. Once they give the PR to the sponsored person and has landed, they are almost helpless in reversing their decision if the "partner" later opts to stay here for good.
So many things are playing in the mind of the VO.... are you still really living together or just using the relationship to get a PR for you? You know, even those proofs of continuing relationship can be for "show". They just look blindly and take everything in good faith, then approve the application. Those proofs speak for the past...can they be sure about the present reality? If I were a estranged partner, and my "ex" requests it for the sake of the children, why not?