I would say that you might want to hang further help on concrete signs of him getting his act together - he can stay at your parents home if he is actively pursuing a program of recovery, say, or he'll get help with his bills if he is working and saving money, or anything that you think you are willing to stand by.

The hard part is finding boundaries that you are willing to enforce, and making sure they are YOUR boundaries, rather than attempts to control the A.  That is, a boundary would be, say, that he is not welcome in your home when he is drunk.  You are not telling him not to drink, you are telling him what YOU are willing to put up with.  This can work.  However, if the consequence is one that you aren't willing to come through on, it does no good at all - "Stop drinking forever or I'll never speak to you again" - this type of thing only works if you are really willing never to speak to him again.  And, of course, 'working' doesn't mean it makes him stop drinking, just that it gets the drinking out of YOUR life. 

That's why in this program we talk a lot about baby steps - it may end up that the only possible road forward for you and your parents is to cut off all help for your brother. However, it doesn't sound like you are anywhere near that point, and trying to force yourself to it won't work - you will back down, and no gains will be made at all.  Much better to make a tiny change that you know you can stick to than vow to make a huge one that you can't.  If all you can manage to start with is something as small as "If you vomit all over my bathroom, I won't clean it up for you", then that is a step in the right direction, and if it's all you can do right now, it's still an improvement.

In my own life, it was amazing how much difference very small changes made, to the level of happiness in the home.  One example - I stopped sitting by the window wondering where my husband was, whether he was drinking, when he'd be home, and started taking the kids for a walk most evenings.  Once they were in bed, I'd do some yoga.  Very very often, he would get home, maybe drunk maybe not, while I was doing these things.  Since I wasn't waiting at the door to jump on him, he became less defensive and we fought less.  He was drinking exactly as much, but it became less of a problem in our lives.  When he finally sobered up, it had very little to do with me, and in fact his drinking and drug use hadn't been a topic of conversation with us for months. It was sad and difficult to watch him go downhill, but he was not dragging me and the kids with him.

Aloha Brian!!

He is in a brief program you say?  Can you contact them?  Can you get a copy of his assessment?  He says he is not alcoholic.  What does his assessment say! The disease has progress to the point that he has physically assaulted your father?  Did your father file a TRO?  He is spending less time in jail for a DUI than the assault?  Police and court NEED to know the progression of the disease.   This disease lives off of fear...Is the family afraid? 

You are correct and have the right skeptical attitude about the promises.  That's one point for you; nothing for the family.  Learning to be even more skeptical will save you and your family a ton of trouble.  He is at the point where it is better not to listen to what he says and only watch and judge his behaviour (by his I mean the alcoholic who has replaced your brother). 

When the disease has progressed to out of control behavior that includes assault the line has been crossed.  He has gone beyond even his own values and a short stay program will not buffer that at all.  There is no short stay program that is available that will work.  The booze owns him!!  He doesn't own himself.

What I am suggesting here comes from my past practice as a alcohol and substance abuse behavioral health counselor. (Broke my anonymity but what the hell).  There are alot of programs out there that are available for him and some are most expensive.  He doesn't have a job so there for no medical coverage and probably no cobra coverage.  Medical/aid not a chance for long term that I know of.  AA is the most significant success available to him and it is free except for voluntary contributions and yet....it must require him to be honest (I am an alcoholic and have problems not drinking so I need help) and willing (I am going to AA starting now and will continue on a daily basis) in order for the start to be made.  What you and the family must know is that AA does not make guarantees.  That program will and does work if it is worked on a daily basis for the rest of his life.  If he isn't ready it's either insanity or death.

Sounds like the insanity stage has already been reached.  If he has physically abused his father the death part can come next.  The death mentioned in the discription of alcoholism does not signify a death to the alcoholic alone.  Family, friends and associates can also die as a result of his drinking consequences and I have heard of more than many such victims.  This is the most powerful, cunning and baffling disease I have ever witnessed.  It cannot be treated with kid gloves.  Even those of us who work with the alcoholic don't use kid gloves ever.

See if he has had a legitimate assessment and hold it up to the light.  Also have the family take an Al-Anon assessment...the pamphlet about being affected by another persons drinking will help with that.  A merry-go-round called denial will also be good information for the family.

These are suggestions.  If you take them you will be more aware.  If you don't you and the family will be even closer to harms way.

In love and service.  (((((hugs)))))