Hello Galen and welcome to the C.M. Forum! Control Mastery theory is very applicable to the treatment of substance abuse. There is a posting talking about the treatment of addicts by Lynn O' Conner above that might be of interest to you. I am not sure what you are wondering about- maybe you could give some more detail.
This theory is very case specific so each case is treated according to the specific plan a patient has. Plans are unconscious and based on the pathogenic beliefs or traumas they (patients) are trying to master. Substance abused occurs and is used by athletes and others for a variety of reasons. Do you have experience with this population? If you are a clinican, you might also enjoy reading the case currently under discussion in the case conference section - "Caroline" it is about the treatment of a chemically dependent woman.