I've known about the 5 stages of grief for awhile and I do like the concept of the whole "Link dieing thing". but we may never know for sure. Most of MM was symobolic and filled with emotion throughout the game I love MM and it is my fav Zelda game and I would not be sad or upset if this theory would prove true but find it pretty awesome instead.
P.S. hope that Majora's Mask 3D comes out soon LOL