Later then :)
It sounds like he feels he may have lost control and he probably does not like that. From how he has behaved all along, he likes to maintain control even when it hurts others and especially when it hurts you. He seems to want to let you deal with these situations without his help just so he can do what he wants. Dave does not have a choice about the divorce, does he? And according to your attorney, he can be removed, just based on what he has done to you, right? If that is the case, then he may just be blowing smoke because he doesn't like you challenging his control.
He cannot have you committed. There is no evidence that you have anything that you can be committed for. And you have so many people that can go to bat for you that it would be near impossible for him to succeed. He is a known abuser. It may help you to call someone who can help and let them know what Dave said. You may need to have another person intervene if Dave does try anything.
It sounds like he feels defensive about you doing things without him, though he will never do them himself. He seems to pull out the same argument each time, that everyone is against him and everyone is poisoning your mind against him. All things center around him all the time. And he seems to want to keep his abuse quiet so no one knows that he is not doing the work at home. He may just want you to cope with it while he ignores it.
Arguing with him gets no where. He is not interested in hearing reason and doesn't want to change. You did the right thing, no doubt. Calling Mark and getting the work done was necessary. Dave gave you no choice.
What worries me is that he has threatened you. That shows he is very unstable. If he threatened you again today, then reporting that to your attorney and maybe the police is important. You need back up on this so if he does try something, you can get immediate help.
I'm sorry, Hilary Rose. It sounds like he is losing control. This is not your fault, it is his and it's important that you recognize that. It may feel overwhelming when he is upset, but that doesn't make you less right. You took responsibility and did what needed to be done, when he would not do it. If I may suggest, you might want to get pictures of the fence you have now then again when he tears it down. Talk to your attorney about your options too.
Good night, Hilary Rose. Hang in there.