I think that sending a confrontational letter has the potential of being very healing.
However it has to be prepared quite carefully and probably viewed by legal counsel before you send it. Your letter is good and I would make a few changes. I think for now you probably made the right decision. His only come-back seems to be that he could attack you for defamation of character (yes,sadly) so yo have to be able to withstand that.
There are guys on the Board of MS who could advise you on this. There are previous discussions on this Board about this subject. There is advice in the pull-down menu at the head of the main web-site for MS. If you look for them, there will be previous examples of letters and their effects. It's late tonight and I don't think I should try to look for you. But if you want me to later I can try to do so.
I greatly admire the book written by the first victim of the Penn State abuse of Jerry Sandusky. He is a hero as far as I'm concerned. He substantiates his claims with details and the help of other people involved with him.Silent No More: Victim 1's Fight For Justice Against Jerry Sandusky
, by Aaron Fisher
Writing a book can be a tremendous way of gaining justice. It can be a type of "letter" to a much larger audience.http://www.amazon.com/Silent-No-More-Justice-Sandusky/dp/0345544161/