awww (((rainbowzz))) I didn't live through it, I just read it...you are living it.
I'm thinking that you need to get a message to the ex that all you want is the signature, or to know if he isn't going to be forthcoming on it....and leave all the other issues alone, like he's left you. ((((hugs))) He may not want the name issue, as that means his responsibility... might take court for that.