Busting, there are some positive developments. At least he is easier to communicate with and trying to reconnect with the kids. It is interesting about the text with your mom. I would say that he will be waiting for her to invite him or initiate anything, I’m sure he feels guilty and unsecure, and not sure whether he would be accepted. Nevertheless he still replied and told her about his plans.
Maybe the rumors about the split with OW are true. He replies and answers the phone right away, so she might not be around.
Keep your expectations low though.
M:50 H:52 S28 (my S from previous marriage) M:17 + 3 BD: 06/12 S: 06/12 - H works in another state
