We just received a new trust and will from my father-in-law who is a 90 year old alcoholic, It was sent to my 63 year old alcoholic husband who is an only child. It said that after my husband dies his caregiver will be a successor trustee and she will also be an executor and she can do whatever she wants with the house we live in. My husband inherited it when his mother was alive before she died 7 yrs ago with dementia and this house was not a part of the trust. In the new trust we received 2 days ago, my father-in-law is a trustee and my husband is a co-trustee added this house into the trust.
Best plan of action is to IMMEDIATELY consult with an attorney who specializes in wills, trusts, etc. This attorney must be separate from any attorneys involved in the current actions. You must be completely truthful, have all related documents organized and ready for discussion, and keep an open mind to hear everything the attorney tells you after he or she has evaluated everything. The worst thing you can do is to withhold any pertinent information that the attorney might need.
If your husband legally owns the house, in other words the title is in his name your father-in -law can't put it in his trust or will. Maybe I'm missing something in your question. If it's legally your husband's and you live in a community property state in may become yours if he dies. I sense your fear. You can find out whose on the title by going to the county tax website. Have you actually seen the trust and the will?
In addition when you're dealing with two alcoholics you may not even be getting the whole truth.