You will need a deed to make a transfer. The transfer may trigger the accelleration (due-on-sale) clause in the deed of trust, but in my many, many years of practice, I have never seen a lender accellerate a performing loan. However, it is a risk you must be willing to take. Best of luck.
An attorney would need to look at your trust to prepare the deed properly. Maybe the attorney who prepared your trust could help. It shouldn't cost more than a few hundred dollars to have it done right.
I think you might not know the purpose of a lis pendens. It merely provides notice of anticipated or pending litigation and is filed in the real property records. It is merely a notice which is notarized and is recorded and serves no other purpose other than to provide constructive notice on record. On your other issues, my colleague offers excellent advice.
You can evict your friend. Be sure you give proper written notice and follow the instructions of the Washington eviction court. Many courts have instructions and sample forms at the filing desk or online.
Technically they would have to give you proper notice and follow eviction procedures. The inlaws would be liable if they remove your items so they are subject to theft. If they throw your property out, you could file a complaint against them. However, I agree with my colleague, you should move as soon as possible.