You seem to think that the DR book is THE ANSWER to every problem in the M. Or some magic potion. Dead wrong! The DR book is only a GUIDE with suggestions, solutions, and soap suds to save your M. (yep, I added soap suds just for fun )
There are FAR TOO MANY variables that influence the DBing process. One can be a DB Master and yet the WAS is still far too gone or ins't interested in reconciliation at all. That is why I emphasize that it takes two to tango. The chapter 4 is absolutely worthless if the OTHER PARTNER won't or doesn't want to tango. Hence, you can only CONTROL yourself.
You cannot force the WAS to stay married to you if they DO NOT want to....whatcha gonna do about this? On the other side of the coin, the LBS eventually discovers that they don't want to stay married to the WAS either because they are too broken beyond repair.