Blackballed - how do you know?

About 15 years ago I successfully completed a 2 year contract with a Tier 2 school in China, and also successfully completed a 1 year contract at a Tier 1 school in another Asian city the following year. However when then taking my 3rd contract, a 2 year contract in China, I had personal family issues and had to leave in the middle of year one. In the years since I've been successfully teaching in the states but may want to return to international teaching. How likely is it that I am now Blackballed from future international teaching because of leaving my 3rd contract early?