I think its likely that Zodiark was enevated into 14 pieces with the sundering. But that Zodiark was also missing his core, I suspect the missing segments are a representation of the missing core. This is also why the final days did not strike everywhere at once, some part of Zodiarks effect was still in place. I fully expect that parts of him still exist out there because the Sacrificed souls speak of being made Whole once more suggesting they too were sundered.

But then i would like for Zodiark to reppear at some point in th future perhaps to save the shards that are starting to fall apart due Hydealyns Sundering dissipating.