If a boundary is handled properly, it will not appear as pursuit. It is just like having a boundary line around your property. It is all about protecting yourself. Now I am going to give this example, and that's all it is.....an example. If a W is having an A, the H can tell her that he cannot live in an open M, and if the A does not end immediately, then he will take steps to file for a D. You see, the W is free to make choices. The H is doing the action to protect himself emotionally, and any other reasons he has about not staying in an open M.
I will warn you, however, to never "use" a boundary as a tool to control her. There have been men who would give this example, thinking it would stop an A. When it didn't end the A, then he would want to back peddle, instead of enforcing the boundary. So that's why I said it is only an example to demonstrate how a boundary works.
If the WW does not honor the boundary her H has stated, he should carry through with an action that will protect himself.
Be prepared to back up whatever you said, b/c a WW will test you to see if you really meant it. Enforcing personal boundaries will help get back the lost respect from your W.
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!