Small claim action for damage and theft

[wrongly accused]

My boyfriend and I were served with a small claims suit by the person he bought his house from last year This seller came back approx. 3 months following the closing and tricked my boyfriend into signing a bargain and sale deed, which is invalid according to the 1st mortgage holder. The seller then proceeded to launch a harrassment campaign interrupting power and water services, another small claims suit against just my boyfriend for non-payment (but not specifying non-payment of what), personal invasion by just walking into the residence when the front door was unlocked, until my boyfriend moved out of his house. He took his appliances (fridge and range) and one ceiling fan when he moved. These are the items we are being sued for as "theft". I do not know of any damage to the house. The seller listed this as "theft and damage to rental house". I did not rent this house nor did my boyfriend. I did not live at this house. I did not remove or take anything from this house. The seller did try to have us prosecuted for theft criminally, filed a complaint with the police, we were questioned by police, and the DA determined it to be civil case. This is in Oregon.

Do I have a case for liable and abuse of process? My work depends on my reputation and passing background checks for large corporations. What about predatory lending laws applying to the seller? Thank you to anyone who is kind enough to give me their opinion.