It totally makes sense and I don't necessarily see anything wrong with the single exchange either. Just wanted to give him a word of caution to continue to think about the larger goal (detaching).
Also - Rys please make sure you think really hard about your motives when you do something like this. I personally made a lot of excuses to contact my W when really, I was looking for her to say something nice that I would then frantically look for deeper meaning to. Be a little hard on yourself when you get the urge and make sure your motives truly lead towards detaching, or at the very least, don't adversely affect it.
Make sense?
Me:38 W:39 No Children BD: 5/13 EA/PA Confirmed: 7/13 W Moved out 12/13