I am not sure if I understand your question. What I can say is that sometimes patients with alcohol use disorder are not able to achieve abstinence, but they are able to drink less, and this is better than keep drinking the same. So, drinking reduction may be a target instead of complete abstinence, but since relapse implies lost of control, I do not know if it possible to speak about "controlled relapse".
Empirical date demonstrate that controlled relapse is a rare exception. A relapse leads to an increasing craving for alcohol and to an accelerated development of addiction. Alcohol addiction is a chronically relapsing disorder characterized by loss of control over intake and dysregulation of stress-related brain emotional systems.
A person can certainly set themselves up for a relapse, either consciously or subconsciously. It can be how they rationalize using again. I can also see possible benefits of a clinician creating a controlled relapse, but I would question the ethics of such a technique. The short answer is yes; people do induce a controlled relapse, but it seems counter to recovery and more a justification to use. It is inconsistent with a 12-Step recovery model which I use in my practice.
Having said that, there might be some benefits for certain people that I do not see at this point.