Shel, get that $ out of that account asap, if it's still in the joint. He has some sort of plan here that you aren't seeing. Of course, he wants you to use his L. It makes it easier for him to get whatever HE wants, but that is ridiculous.
You need to do this TODAY! The clock is ticking on responding to his petition. As Sivlerado said, be sure to ask about petitioning that your H pay your legal fees since this is what he wants. Not to mention, you can get temporary support quickly since he's left you with basically nothing. You can also state in the temporary order that he cannot remove you or the girls from his health insurance.