I would not speak to his mother about the situation. She can't do a thing w/him, i.e., especially talk to him about the situation. It could very well make things worse than they already are. I wouldn't involved anyone else in the mix except a lawyer at some point. It's best to keep your situation between you and your spouse.
If he doesn't respond in a week, you will then need to make some decisions on how best to move forward. It may be that he needs to think a while on what you posted to him...you can't rush an MLCer when it comes to wanting a response quickly. They do tend to move at their own pace, which is slow...unless it is something that will benefit them. I'm not making excuses, but you have to remember...he's not the man you knew, therefore, he may not respond or even respond the way that you want him to. Dig deeper for patience and sit a bit.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
