I think I see it now. .041 means: Self defense doesn't apply if (1) or (2) holds unless (a) or (b) holds. The reference to earlier sections of the chapter was just put in to confuse people like me.
So does the immunity hearing immediately end, with Zimmerman being denied immunity, if the judge finds it more likely than not that either (1) or (2) describes Zimmerman on Feb. 26?
The jury instruction is much more clear than the statute. It doesn't refer to "earlier sections" as what is being denied as basis for justified use of force. It says "However, the use of deadly force is not justifiable if you find: ... (Defendant) initially provoked the use of force against [himself] [herself], unless: [(a) or (b)]." I assume the "deadly" word would be removed if the person is asserting self defense for use of non-deadly force. Anyway, by not referring to the language of .012, .013 or .031, the jury instruction operates so that those sections aren't available to a person who provoked the use of force against himself. BUT, self defense is still available under those (a) or (b) exceptions - to save your own life, or after an unavailing retreat/capitulation.
I think the answer to your question is that is Zimmerman is found to have provoked the use of force, he's denied immunity, because he's then under .041, and if he's under .041, 776.032 immunity is not available. And yes, the standard of proof is "preponderance," that is, "more likely than not." This standard of proof applies for all elements of the defense or negation of the defense, at a pretrial hearing on the merits.
The hearing doesn't end - it continues until all the evidence is in. Then the judge retires to compose his opinion. If he finds it more likely than not that Zimmerman provoked the use of force against himself, then there is no right to 776.032 immunity.