Can I sue my father to return my college tuition?

My mother started a Florida College Tuition Plan for me when a was a kid. The account has both of their names on it but she placed his name as the primary account holder and herself as the secondary to ensure he had an obligation to help pay for the plan. My parents got divorced and he was ordered to pay child support and continue paying for the tuition plan. By the time I turned 18 the plan was paid in full and I was using it to pay for college. Then a couple of years later without warning he cancelled the plan and withdrew the money, claiming that I wasn't going to school anymore and that I didn't need it, even though I was currently enrolled and attending classes at the time. Can I sue him to get my tuition back?