I'm sorry this occurred. That is why there is a Poohbah forum, where only such members access it. (Still if spouse were a member he/she could also be there.)
There is no expectation for privacy here I think, except for the anonymity the screen name allows for. If what you said in the forums is true, and especially if you shared how YOU are feeling, then there really shouldn't be much of a problem. Yes, it's uncomfortable to have someone do that. I'm sorry he found out who you are here. Maybe admin has a partial solution for you now. (I guess he would have to prove that what he found was actually written by you, and not just an assumption? I often copy/save/print out other member's posts here for further review and thought... maybe that's all you did with someone????