I don't remember if you got served or not... if not, I would cut her off all insurances; health, car, home, life, as well.... once served you cannot change insurance coverage. Make her really feel what it like not to be married.
I don't know that you would want to push it this far. Didn't you say that your W hasn't even brought up D yet? To me, these actions just sound vindictive.
Me: 32 H: 32 M 9 yrs #1 D7 #2 S5 #3 D2 Bomb 8/12/11 H moved out 8/14/11 PA started w/H & OW in 1/12 - found out 3/24/12 Got my own place 8/25/12 H & OW move in together 9/15/12 Still married.