You need to hire a local criminal defense attorney immediately. Quit posting about the incident on a public forum.

Its a joint account, so yes they can, if the other account holder isn't on disability as well or if you have co-mingled non-disability funds into...

If no one is contesting your continued role as temporary guardian, I'd just leave it alone for now. If he mother (or another interested person)...

Yes, you can bring a petition for a successor administrator--not limited to any particular lineage.

You are an adult; you are free to make adult choices.

Consider seeking guardianship of him with the special power granted for divorce. Then, you can seek to act in his best interests.

Yes, you can give him POA to handle the closing for you--make sure the POA is specifically written to allow for this particular real estate...

Can you hire an attorney for this? Sure, but why? You'd spend hundreds on an attorney over a petty issue that it wouldn't be worth it. Just...

Contact Adult Protective Services and think about a guardianship for him.

The best help you can do is to hire a criminal defense attorney for him.