Hmmm...clearly some people should not write at "the end of cocktail hour".
I agree that this sounded somewhat like DBing, only with a slightly warped twist to it somehow.
If you can get past the sense of betrayal you must have felt upon reading that letter, BT...you can look at it as a blessing.
1) There are obviously some issues about yourself you need to address and change. That letter wasn't full of delusions. If you don't turn that mirror around and deal with your own shortcomings, you might as well just piss in the wind for all the good this site and DBing will do for you. That letter was a wake-up call for you. Use it to your advantage.
2) You know "the game" that is being set up against you. So play it better, and with sincerity. Be careful of the spirit of offense that is probably trying to attach itself to you after reading that letter. Turn it around and make those words work FOR you instead of proving them to be true. Not many people get the picture of themselves as they appear to others painted so vividly for them. It is a blessing. There is an element of truth in those words somewhere. Be honest with yourself and address it. You can't change your wife, but you can change yourself and that will DICTATE that she respond differently to you.