Thanks so much for all the quick responses. It seems to me as well, that due to the check being "Non-negotiable" , made out to me and not being endorsed until I physically made the deposit in my Canadian bank, that I didn't do anything wrong(hopefully).

I could be wrong about this as well, but it seems to me that since Canada and the U.S. have the same rule about money over $10,000 going OUT of the country, that one of the Canadian officers would have made me aware of this at the time. However, I assume they don't have any responsibility to that. I guess I should have been wise enough in the first place to have made sure it wouldn't be an issue beforehand. It just never even crossed my mind that it could possibly be.

I will be sure to fill out the Form TD F 90.22.1, though. I found out about that about a week ago and I'll make sure that's done!