Having to limit family time is like getting kicked in the groin by a marching band...it sucks. You are right though, it is confusing for the kids (sends mixed signals) and makes it more difficult for us to move on. For my W, family time is going to eventually change and include the OM and that is my next big hurdle.
Tough love is difficult and may not be right for everyone, depending on the situation. I think it is right for my situation and I am not going to second guess it. Having said that, I still want to have some level of flexbility when I feel like it is not going to hurt me or if the kids will benefit from it. Going cold turkey, as you suggest (one year), sounds a little to rigid to me. Who knows?!