It's good to detach. Not sure about going dark. Sandi would say yes, and I'd probably agree, but MWD's DB coaches likely will advocate a warmer approach.
Anyhow, don't fall into the trap of focusing on your WW. Go GAL and rediscover yourself, and be the guy your wife would be a fool to leave.
The word on the street is that there is no path to reconciliation through in-house separation. And it makes sense to me. So prepare yourself for some tough times....
Me: 50, MLC/WW 45 Young kids Nov 2015: BD1 Apr 2016: BD2 Jan 2017: W filed Feb 2017: D final