Yes. It means that you are not a diabetic now; and your risks are that of a healthy individual. However, if you change your lifestyle to a less rigorous one - especially your diet - you can revert back to a diabetic state any time.
Your hard work and dedication has obviously served you well.
I would like to first point out that the test 'HEMOGLOBIN a1c" is a test that may not always tell the truth. In that, I mean the term hemoglobin loosely refers to red blood cells. Our red blood cells typically live to be 90-120 days. Our hemoglobin is changed in such a way (glycated) when our glucose is at a particular level and we can pick this up in a blood test called hemoglobin A1c. As such, anything that affects the RBC/hemoglobin will alter the HbA1c result. In example, getting a blood transfusion (somebody else's blood!) will lower the HbA1c.
Hence, as an Endocrinologist, I corroborate the HbA1c to fingerstick sugar checks to make sure they are close.
Regardless, it sounds like you have worked hard enough "to beat" diabetes. Diabetes unfortunately has an underlying genetic component (albeit we aren't exactly sure what gene/s), and you will still have some predisposition to diabetes.
In short, you're always at risk, given you had diabetes at one time. I would also caution that if this was not traditional 'type 2 diabetes' that you may have something called 'Latent autoimmune diabetes of adulthood' or 'LADA', in which people can "honeymoon" for many years without need for medication or insulin. This is unlikely, but a consideration.
Hope this helps and congratulations again on your extremely impressive efforts!