As for your question "How can I stop my husband from signing/forging the deed?", the easiest answer may be to call APS, do a self referral by providing them with the information you just shared, asking them to open an investigation and requesting they speak with/interview your husband and son regarding the living situation and your medical needs. It may just be that if your husband knows authorities are aware of the situation he will refrain from illegally transferring the property. Other than this, you might consult an attorney in your area to speak to him, again, so he knows you are making others aware of the situation. If it comes to the point it is necessary, a local attorney may be able to file a legal injunction against him to prohibit him from transferring the property. Also, I am aware this is something you may not want to do at this point in your life, but another option is to retain an attorney to file a divorce action. Advise the attorney you would like temporary orders and in those orders have the Court freeze the transfer of all marital assets. Unfortunately, there is a saying that states, "the rules of our laws are intended for law abiding citizens". At times there is no way to stop a person from doing something if they are determined to do it. However, you should make every attempt to protect your assets. What your family is doing to you is abusive and many times, the only way to stop abuse is to expose it.
In answer to your next two questions, " How do I get my son out of my home? We have 2 homes and I feel one is rightfully mine and could be used to pay for an assisted living home." Getting a relative, who is not a tenant out of one's home can be quite difficult. In your situation, it is complicated by the fact your share ownership of this home with your husband whose position is opposite yours (he says your son can stay). However, there are legal remedies which may be of assistance to you but will require an attorney in your area to at least advise you. One option is something called a Forcible Entry and Detainer Suit, it may be called various things from state to state but the botXXXXX XXXXXne is to file an action with the proper court in your area to legally have your son removed from your property since he refuses to vacate at your request. If a person is successful with such a suit the local Court should ensure the unwanted person vacates the property even if it gets to the point that local law enforcement must escort your son off the property.
If you have not already done so, you should contact an estate planning attorney who can inform you if any options are available as far as placing your property into a trust so that funds will be available to you in the event you need them to go into an assisted living facility at some point in the future. This suggestion is secondary to your immediate problem of securing a safe and comfortable place for you to live right now.
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I am going to schedule a follow up with you for 48 hours from now to give you time to review my answer and think of any follow up questions you may have for me.
I am so sorry you are having to go through so much Carole. APS can help you and provide you with numerous referrals and I can't stress enough how valuable their assistance can be.
Best wishes to you, Attorney DROD