i know runkid just asked thhis but what is the situation with the house?is it in one of ur names or both?
i dont know if it will help but what i did when i was in that situation(because the house was in a joint tenancy)was leave the kids with a friend(with overnight stuff,bottles for baby etc)and went and told him straight that he had untill the morning to get out and sign the house over to me.i had to bribe him,and also blag him that there was an emergency court order going through which meant he would legally have to move out in 2 weeks anyway.i then picked up my overnight stuff and went to my freind's.
i'd arranged for xh to stay at the local homeless hostel so he knew i meant business and wasnt just trying to get him to change his ways or any of that crap.
the next morning i made him sign a letter that i'd printed out,saying he handed over the tenancy to me,before i would give him his job seekers allowance(that was paid into my bank),and somebody from the homeless hostel came with me and gave him a lift there.