I'm not an expert and am in the same place as you. Here's what I have done about the 180 and being distant. I am still giving him his distance, but when he does reach out I am much more upbeat and positive in how I respond. Before I was more perfunctory. He has been reaching out a lot more lately (not all good) but I think that is more a function of where he is in his cycle rather than anything I'm doing, but who knows. We have to experiment right?
In a talk he initiated this weekend I also expressly told him that because he was the one who chose to exit the relationship and has been unkind that he needs to understand that he will be initiating anything that happens between us (he was expressing anger about not knowing about things going on that he never asked me about). To top it off I also told him I was not going to have any conversations with him in which he is not looking me in the eye. I'm sick to death of those shark eyes and feet stares. I was able to do this because I honestly don't care if I ever see or talk to him again. He has no power over me. That is the best way of dealing with limbo I've been able to find.
