I think the answer to thank depends on the person. I also think it can be influenced by the gender of the person. Empowerment may not be as important to one as to another. I am not sure how much of this Globule needs, but I think he needs a lot and he needs it sooner rather than later.
In my opinion, if this approach hurts his dad, so be it. They can work on reconciling later. But the benefits to his marriage could far outweigh the harm done to his relationship with his step dad. I think his primary consideration should be how this could ripple through his relationship with his wife. But only he can make that evaluation.