I respectfully need to disagree. Take a quick look at post 648. At the bottom center of the fin, you will see a little 'hook'. This is part of the center attachment point (the bottom half is gone) and a bolt would have run through it.
Now google "AA587 and photographs". Close inspection of those photos will show that the damage is remarkably similar.
This suggests perhaps that the loss of the rudder limiter allowed the rudder too much motion and ripped the fin off, during transition throught the storm. If it did, then the result is probably the same as AA587