Apparently Fury has had a nervous breakdown and is undergoing psychiatric care. According to ESPN's Dan Rafael, he may need to be placed in a mental institution.

Dan Rafael's article on Fury-Klitschko II cancellation

I just hope someone else can fight Wlad for the titles. I wouldn't mind seeing Ustinov-Klitschko for the WBA. Or for the WBO, perhaps #1 Parker or someone else could fight Wlad.