Ms. H, That's great news for qualifying for a mortgage. You'll find the right house in due time.
Now, about your xh, you have to bite your tongue and stop feeding into his antics. You are just upsetting yourself more and more. What does the paperwork say about him taking the kids out of state w/o your permission? Can he do this without notifying you in advance? I would most certainly advise my lawyer about the trip and let him deal w/it.
Every time you go up against him, he hits you and your self-esteem once again. If he was so damn unhappy living w/you, he would have walked out years ago. Also, you would not have had two beautiful little boys. He's saying this stuff to upset you and make you feel miserable. He's won once again. What he's saying is BS in the finest form. Stop going up against him when it comes to what he owes you. Let the legal system do it's job and you are paying a lawyer to take care of such matters...give it to him to deal with.
I know this is difficult for you w/him being gone w/the boys, etc., but try to get some rest for yourself. I'm sorry he's not grown up any, but it's going to be years before he matures and makes his way as an adult.
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.