Hey Niagara, you can totally request an exception and they should not discriminate you on the basis of you being male.
There are many men who requested the exception and left abusive situations. There was even a guy who nearly got killed by his sponsor in a murder-suicide! You can read about his case on CANLII. Here is what you do.
LEAVE abusive situation. Do not stay. Exception will not be granted if you are still cohabiting. Find a new place to stay.
Tell the police. Even if they laugh at you (because you are a man).
Contact CIC. Call the number. Say you are in an abusive situation and want to request an exception.
They will give you an appointment to talk to someone.
Before the appointment, gather proof of abuse. Abuse can present itself in many forms: financial, physical, psychological etc. Take screenshots. Save it all in a neat document. The CIC website has a section defining all types of abuse. If sponsor continues to abuse, screenshot, photograph, save it.
Gather anything that proves you can support yourself in Canada: proof of employment, your CV, your diploma, your new rental agreement, any proof if you are registered at school here etc.
Then you wait.
You are still a PR and you can still travel and have rights.
They might be slow to let you know their decision: 3 weeks to 8 months. You might have to pester them eventually.
If you travel internationally and are pulled into secondary when you come back to Canada, and they question you about your relationship, do not stress. Tell the border guards you have requested an exception and have been in contact with CIC.
Good luck!