I know the case in which the immigration was in process and divorce happend while visa was not stamped. Husband was the principal applicant . Wife later got immigration & now she is in canada with her daughter.
My ASSUMPTION in this case is that wife is the legal PR holder and she can now come independently and you can not cancel her PR too. Nevertheless, you need to update your status and better have the divorce papers finalized in your home country as instant divorce doesn't happen in canada, one year wait time called SEPARATION enforces, plus you may have to pay significant money to wife.