If he's anything like my xh was, he'll say his lawyer said I had to give him a key and that he's entitled to come and go as he pleased in his home. Funny, my lawyer said differently and I told him that. I even went as far as to advise him that he needed to advise his lawyer to check out the MD laws on such things. Did I hear anything more about it? Nope.
When he starts to spout spittle to you, just be firm and calm. You don't have to justify why the locks where changed. Keep the conversation short and sweet. Gosh, I'd love to be a fly on the wall when he does find out.
Mrs. H, please take care of yourself and try to enjoy your weekend. Do not let bully get to you. You've come too far for him to rip you apart now. I'm glad your lawyer is right there by your side.
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.