I'm glad you're enjoying your vacation. Just try to be present in the moment with your S. Try not to think about anything else except what your doing right now.
As far as filing, talk to your L when you get home. She can help with any legal advantage to your filing and under what terms. If you file, I don't see it as you caving to his demands. I see it as you taking your power back since you won't be doing it the way he wants you to. You might be able to get more favorable terms on your other agreements as well since he wants it so badly. By the way, check with your L about the money that he owes you that might give you some leverage too.
