I don't know how old these messages are, but anyway...
I think that 12 step groups can be helpful and for some are appropriate treatment methods. However. I am a definite believer in self- responsibility and the Law of Attraction etc. And I do not believe that addiction is a disease over which we have no power. The US govt makes mucho money out of addiction and so called recovery. Look up Stanton Peele, his book The Truth about Addiction and Recovery is very enlightening and informative. He also has a website.
I hope things are going better for you and your son. I am a struggling addict and crack user. And by the way, crack does not cause physical withdrawal. Most people sleep for 24 hrs and then you need to build up your system with fresh organic fruit and veg and lots of water and supplements.
good luck and love to you