I also second what above posted. IF you are married you are married, untill decided by the court.
Proof has to be provided.
Else their is Non-Accompanying Spouse, but, like mentioned above. The Guide says;
All applicants must undergo a medical examination.
You and your family members, whether they will be accompanying you or not, must undergo and pass a medical examination. (Page 40)....
The Guide also mentions that they have to Fill the Schedule 1 Background Declaration form and Additional Family Form;
your spouse or common-law partner (whether accompanying you to Canada or not);
your spouse or common-law partner (whether accompanying you to Canada or not) (Page 26)....and (Page 31)..