Texas is a community property state.. The easy way is to have him sign at closing..
I don't know your story, but if that is a huge issue... I hate to say it.. but attornies will have to get involved... :(
With any luck.. maybe you can hit the "easy button" and he will sign everything with you. If you are still married, shouldn't be a problem... Just say "Do you want to have a wife, or do you want to have a happy wife?" LOL!! Most guys may not be that bright, but we know the correct answer to that one! :)
If there is a divorce type situation, the only thing anyone can really suggest is to contact an attorney and obtain legal advice.