If your H was a better man for 25 years, chances are that once his crisis is over he will be again.
Meanwhile, however, you have to learn not to take everything personally. (Believe me, this is NOT easy, but a wonderful life skill.) Try to treat him as you would a stranger--cordial, cheerful, keep it short. If he's really trying to stick that metaphorical knife into you, don't give him a chance--end phone calls and conversations with a breezy "Gotta go," leave the room or the house if necessary, and really focus on what you need to have control over: you.
If you haven't already, order Michelle's books and read them for tips. Also, there is a resources section here that has invaluable information on all the charming behaviours that come with MLC.
