i've been married for almost 13 years....
FYI if you know what email account he has set up his facebook account through you can look through it for copies of all the messages he receives.
Then I suspect he knows (or he at least suspects) that you have his password and that's why he's deleting everything. Still not good either way. Sounds like he got mad at you and is just doing all this just to get back at you. Not uncommon for men to get mad and go complaining to another woman about their wives. I see this all the time. I swear most men are like babies always needing someone to change their diapers. lol
I agree with peacyma and Myra.
I agree completely that as women we just learn somehow that we are expected to "take care" of all that goes on in our family.
Did he answer her post?