Besides, I find the tone of the open letter quite respectless I must say. Koshiro was already working in the biz when most of the encryption whiners including the author could barely hold a joystick. The idea that a veteran like him is not aware of the problems with copy/program protection...
I guess the encryption was used to get at least a few sales in before joe average gets his "free" copy from the crackers.
So boo-hoo, let the man decide what to do with his game. I'm sure there will be plenty of ways to play it in years or even decades to come, including a possible MD release...