Welcome to NeuroTalk. I am sorry to hear of your brother's struggles.
It is very difficult to break through the rigid thinking that is a common symptom of TBI. The first thing you and family need to do is find a brain injury support group. Most state Brain Injury Associations have a list of them.
What state do you live in? Maybe I can help you find some resources.
There are two online resources you can check out to help you understand more. The TBI Survival Guide at www.tbiguide.com
is an excellent resource. You can download and print out the 84 page guide.
The YouTube video series "You Look Great" by John Byler can be found at [url="http://www.youtube.com/watch?v=x9Xso4qGdlI&feature=youtu.be"]http://www.youtube.com/watch?v=x9Xso4qGdlI&feature=youtu.be[/URL It is 6 segments that take about an hour total. Your family will learn lots from watching it.
I think his therapists are right. He will need to fall and hit bottom to learn he needs help. It is tough for a guy to accept that he is broken and needs help.
You may want to check your state's judicial commitment laws. If he is not able to take care of himself, some inpatient time in a locked facility might be worthwhile. A locked memory care facility may be appropriate. Knowing how it works to be ready if the time comes will be good.
Establishing a guardianship over his SSDI check may be needed, too. With a judge's determination, SSA makes it easy to put a guardian over his finances.
He needs to understand that even if his brain is messed up, there are lots of ways to establish a full life. There are others here who are living with severe disabilities, including being totally and permanently disabled by SSDI rules. We just need to reinvent our lives.
So, try to help your family understand the issues he is dealing with. Knowledge can help reduce the confusion and worry. When you can identify a behavior and attribute it to his injured brain, it can be easier to be tolerant and compassionate.
What dysfunctions are listed on his reports?
What meds is he not taking?
There are plenty of good people hear to help and support you.
My best to you.