Yep, I did a similar path as you, though I knew about DBing from our previous sitch in 2005.
His program is great! i love it. But it is dangerous when your spouse is in walkaway mode because as you say it involves some pursuit and pressure. However, I can honestly say that once you get past that you can incorporate his system to great affect. Touch and talk charges and date night are great tools...once your W is committing back to the MR. And his insight into things is really good related to the obstinate spouse. He can really capture their mindset.
So I am not opposed to his program, and have embraced some of it WHEN the time is right. And also I credit those suggestions to getting my W from the lukewarm early stage to the fully committed back to the MR.
However Wolfman, removing all pursuit and pressure is the right answer in most sitches. WAWs are like cats. They have to want to come to you in order to stay. If you try to make them stay they will scratch and claw to get away with every once of their strength.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018