I'm Lucy, and I'd be happy to answer your questions today. I'm sorry to hear about your situation.
If he won't sign the papers, you can file for a contested divorce. He can't prevent you from getting a divorce by refusing to sign. It might help to ask whether there is a specific issue that's preventing him from signing, because then you could amend the papers and file a partial agreement on some issues. That might make going through a trial easier. But that doesn't have to be done immediately. If you file for a contested divorce, the two of you can give the judge a full or partial agreement later.
This packet may help you create and file a Complaint without your spouse's help.
If you're trying to get the papers signed in order to start the one year separation period, then you could try reducing the agreement to a single sentence stating when you separated. But also, the separation date can be proved by other things, like the date one of you entered into a lease for another property, the date one of you put utilities into your name at another property, or if you moved in with someone else, they could testify as to the date.
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