Just for my records. I have no idea if the letter is real or not, but it would not be out of character, imho.
http://pajamasmedia.com/rogerlsimon/2008/09/29/lonely-are-the-brave-an-open-letter-to-glenn-reynolds-anonymous-correspondent/
http://pajamasmedia.com/rogerlsimon/2008/09/29/lonely-are-the-brave-an-open-letter-to-glenn-reynolds-anonymous-correspondent/