I want them to know that I did not give up on the marriage if they may have the impression that I did. I don't know what sort of reason he has given them for ending our marriage.
I know he will not admit to the A where his parents are concerned.
Then I think there's no time like the present. Just my opinion, but why let the one person who DOESN'T have the marriage's best interests at heart, be the ones to tell people how/why it's ending?
If you want your thoughts, feelings and convictions on the record, then I think you should put them out there, lovingly and without judgment.