Just a thought I had that may or may not be relevant and I'm happy to take the guidance of others here....
Outside of the strict Mahavihara/Abhidhammist interpretation of "fruit" following immediately from "path", there is an acceptance of the possibility of one having attained to the path, without having yet attained the fruit (consider the difference between a lesser stream-entrant vs stream winner for example). In fact, there is a notion in the Pali tradition of an "eightfold noble assembly" consisting of the four ariya statuses, separated by path and fruit.
In light of that, is there the possibility that attaining the "path" of arahantship, is that which severs the fetters and is "nibbana with fuel remaining" and that the "fruit" is what is referred to as "release" and consists of "nibbana without remainder"? If true, this might help unravel the mystery in the Angulimala Sutta about him achieving arahatship before the infamous clod-throwing incident but obtaining 'release' afterwards.
(There is a useful definition somewhere in the Udana, I believe, on the difference between fuel/no-fuel... but can't seem to find it just now)
Thoughts? I'm more than happy to have it shot down if it's clearly false.