@Corey *******
at this point there's little to nothing you can do. Six MONTHS after your first 180 Day entry into Thailand with your New DTV Visa, they may have you cancel the Ed Visa. OR might NOT do anything. From your expressed concerns in your replies, it's obvious that you knew you should have cancelled the Ed Visa before you departed Thailand. You chose not to cancel it.
Go with the flow...you have a new Thai Visa. Enjoy Thailand.