Well I've got good news for you (I think). I had a similar situation (NCM - College) but it all depends if you had training at RMC or at any University as a Commissioned Member - OR you received the same (or College) as an NCM.
After reading the DAOD's and QR&O's (
http://www.admfincs-smafinsm.forces.gc.ca/dao-doa/5000/5049-1-eng.asp ref 4. a, b) on the matter I initially believed I'd be owing for my cost of education [ 80k+ deal breaker ], and para
15.07 mentions a
Salary payback as well, but under the circumstances:
"except for any period during which the member performed normal service duties" must pay his "pay and allowances including the rate of subsistence allowance for his rank and status". Now for me any time I have to be dragged to a parade, show up in uniform, or work on Military related subject matter that is active duty. Be it in the classroom or in a field. Some had the notion that that did not constitute 'Active Duty' but it does.
Furthermore the costs of Books, housing, and actual subject matter is SAID to be 2 days per 1 day of school (Or 2 Months/1 Month Teaching - your call on the measurement) can be further broken into the exact time you worked for that Certification, Diploma, Bachelor, whatever. For me, one day a week was purely Army, minus non-class time (Lunch, breaks, etc.) and you can bring that time toward repayment up. This is however circumstantial and worked in my case, it really depends on how you present the issue.
Regardless of my last, the best way to start is to contact your nearest release section and schedule an interview. It's what I did and I could confidentially ask my questions without becoming a pariah. Find the cost, and your time owed minus time in, and get a real answer. Don't listen to angry people who get up-in-arms (AKA angry little s**ts) about your idea of leaving - for me the Army is a job, not a life-style and I see no reason to stay until my initial is over, and definitely not after.