Path #1 is about removing an obstacle (if he indeed is one) -- not a "symptom." It's only one step along the path of DBing, which is generally Path 2. I don't understand why everyone always thinks this is "either-or." To me, DBing where there is OM/OW involved, is about doing BOTH -- determining the truth of the situation, enforcing boundaries, while improving yourself and "becoming the better option."
I think this is the core of a debate that was raging while I was here last time and really isn't 100% clear in terms of the books, etc. I choose to believe that it's not essential to force an end the the A to DB effectively. Many others disagree and say that no real work can be done while the A continues. I disagree there too. That thinking is focusing on external things and not your own internal things. I suppose in the end it's up to each individual to decide where their boundaries and tolerance is and act on it. I know where mine is, or at least where it was.