Regarding the tax issues, would your tax person be able to quickly show you (and H) the refund vs payment in both a filing joint and separately situation? I know most tax professionals all use software now a days, so I don't think that would be too hard for them to do (or even if you have to pay a nominal fee for that, it may be worth it to get your full refund). Since he's not planning on paying child support this month either that could be another part of your argument. I don't know how much you want to fight him for it though b/c this all could start WWIII!
Regarding the "family" comment, maybe he was just implying spending time with his parents otherwise that really is pretty fake. Yes, you would love to be a family with him, but he's not there yet.
Well hopefully you can still have somewhat of a peaceful evening and come to some understanding with H. You might want to avoid talk about the tax refund issue at least for tonight though b/c I believe your 1st priority is the custody arrangement, right? You just don't want to have the tax issue be a distraction for that.
Me 27; H 28; S 2 Togeth 9; M 4 Sep 11/14/08 EA OW1 Sep 08 EA OW2 Mar 09 EA OW3 Jun 10