Tango, you need to know that the DB Coach may not agree with busting the affair or drawing boundaries. That is the opinion of many of the board members, but I feel like the coaches will stick close by what the book says, and it does not endorse busting an A.
So, I did not want it to confuse you more, if you were given different advise from the coach.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!