Your sitch sounds a lot like mine! I came yesterday from a weekend at my parents house to find out my H was in our house also. He took some workout equipment, our old kitchen table and a set of shelves in the garage.
I wish I could change the locks in my house but I have to wait until papers are signed, even if they a LS papers. My H filed for D and I just recently counter-claimed his grounds to my own. I am expecting him to hear from his L this week regarding that. My H is also one to be short coming on money for me.
I can also always tell when my H is with the ow because he is mean to me on the phone. When ow is not around he is more pleasant.