Ok. So the statute in 776.08 defines Forcible Felony, but it doesn't help much because it defines it as:
So we need to look up when use of physical force against a person is a felony. So battery is generally a misdemeanor. But it becomes a felony battery when it "Causes great bodily harm, permanent disability, or permanent disfigurement"--which seems very much like the common law definition of grievous bodily injury. So I think the addition of protection against forcible felony doesn't add much.
(Note: it does include rape, but that is anyway included in the common law definition. Query if it would include third degree felony battery which is a battery by a person who has a prior conviction for battery--it probably wouldn't because that's stupid.)
Part of the discussion here and everywhere is do you think it is reasonable to fear TM murdering him. Personally I think yes, but even if we don't go to death, we can still have a reasonable fear- which means it didn't happen yet, but he could reasonably see it coming- a felony battery.
Reasonable fear of murder is less likely than reasonable fear of a "great bodily harm, permanent disability, or permanent disfigurement". You get your nose punched in and you have permanent disfigurement. We already know he got hit in the nose and probably got a small fracture, how long does it take to disfigure a nose?
In addition head trauma and brain damage can easily fall under permanent disability, and can be caused be repeated blows to the head even without cracking the skull open.
In conclusion, and in simpler language so the rest of the skittle talkers can listen in, one can pop a guy, if a reasonable person would fear that the guy was going to commit a Felony against him. If the guys was grounding and pounding for 40 seconds, a reasonable non liberal would assume that he was going to get hurt bad.
(One would think that if someone was attacking the same person a second time, that would make it a third degree felony against that person, or in the future, a reasonable fear of a felony committed against that person.)