I don't think Coach was referring to you drawing a boundary about the OW and him ending contact or moving out - it was his take on the email.
I think you need to draw the boundary as you stated you plan on doing.
I can see what Coach is talking about in the email. Pointing out your H's responsibility in the unraveling of your marriage and pointing out how things are perfectly aligned to work out is pressure on him.
Don't broach the subject again - just back off and see what happens. I think the boundary will show your strength and willingness to stand up for yourself.
MySitch Me-47 STBXW-41 D-5 S-8 ILYBNILWY-01/08 Want a D- 01/09 Physical Sep-01/10 D filed-06/10 Got 50% custody=09/11 Ride that wave!