My husband bought home, took kids with him. I was blind sided and had to get apt. Know he is threatening me.

My husband, purchased a house, through his parents, told the kids he bought house do you want live with mom or dad?? 16 yr old and a 13 yr old. He told me a month before he was moving into new home. My kids I don't want to make feel bad, I keep them out of it. due to the face that they live there, he is threatening me with child support, yesterday took my daughter to get her hair cut and it was nothing but drama when I dropped her off. His parents are there as well. he feels he is in control and is using my kids... I had no choice but to get an apt. I am married to him for 16 yrs... he made it clear he did not want to give me anything. Hiding assests. using my kids.