NO. Please learn to read.
“The justification described in the preceding sections of this chapter is not available to a person who...Initially provokes the use of force against himself or herself, unless...Such force is so great that the person reasonably believes that he or she is in imminent danger of death or great bodily harm”
If someone escalates the intensity of the fight from a shove or punch into something that could kill or seriously injure you, then the justification IS available to you. You don’t gain it back. You never lose the right to defend yourself from deadly force.
http://legalinsurrection.com/2013/06/zimmerman-case-the-five-principles-of-the-law-of-self-defense/
The principle of Innocence refers to the notion that a person who initiates a conflict should not later be permitted to justify his use of force as self defense. It is this principle that is captured in Florida statute 776.041. It is, however, possible for the initial aggressor of a conflict to regain his “innocence” under certain circumstances., and thereby regain his right to justifiably use force in self defense
What I expect we will see at trial with regard to the principle of Innocence is the State arguing that Zimmerman engaged in conduct of a nature sufficient to qualify as “aggression”. The defense will respond that nothing Zimmerman did could reasonably qualify as an act of “aggression,” and at the same time that even if he did engage in such conduct he nevertheless “regained his innocence” afterwards.