I agree with Breakaway and Puppy. I think your H came clean with his lawyer and his lawyer asked “Does she have a lawyer? Oh she does, then you’re going to get worked buddy.” And with marital misconduct, he very well could….if you decide to go that route. You really can't say what his lawyer said to him, no matter what you know about him.
Not to rain on your parade but to let you know, he’s probably more scared of what you are going to do legally.
But there is always that chance he’s sincere….
My L told me he sees many couples reconcile. He was honest and said one of the reasons for the reconciliation….one side sees how much they are going to lose and not just emotionally, but from a financial stand point too. But if that were the case, if your H stuck around because he was worried about going to the cleaners….I say so what? Who cares why they stay? What matters is what you turn the relationship into once both parties are back in it.
But Puppy is right again...you really don't know this guy right now. He's got other people/factors influencing him right now that are not fans of yours.
Just protect yourself right now....it will hurt more if you don't.