Are there examples of others that have taken this step and were successful in having their W reconcile?
I am not sure if steve85 did this, but I believe he said he would now.
My sitch was quite different. But yes, if my WW had been making plans to see OM I would absolutely take this step. While legally you can't get her out of the house, you can kick her out of the MBR.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018