I am glad I checked on you before I went to bed. I am so sorry you are dragged into this. Your wife has given you so many times signs that she is longer to be considered trustworthy and sane (at least currently).
Talk to L and make sure you are no longer playing Mr. Nice. If you want to be able to have a solid R with your D not be dependant on your W, make sure you prepare yourself as good as you can.
I've been through a rough time with H right after our separation, no matter what we told to each other, there were never accusations of this kind. I was VERY mad at him, couldn't bring myself to make lies about him.
I tend to believe OM's letter as well as her family's will be easy to fight back.
Stay calm and do not panic. In war everything is (unfortunately) to be expected.
