Ginger, I think your posting was spot on. It's the fear of the unknown and her former h is familiar to Heather. I do agree 100% w/what you posted. If you don't respond/react to his missives, he will eventually get the message. There truly is no need for him to contact you unless it has something to do w/the child support. Heather, your daughters are now old enough to deal w/their father. If they want to be contact w/him, they will. If they don't, then he'll have to figure out how to repair the bridge he tore down years ago.
Your job in all of this is to be supportive of your daughters and to pick up the pieces of your life and begin a new life in the Carolinas. It's not your job any longer to be a support beam for your xh. It's time he grew up and realized what a mess he's created. From where I'm sitting, it is all lip service and no action from him.
Drop the rope, let him go and move forward w/your life. You've been given a second chance at happiness. Grab that brass ring and go for it!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.