Let me explain more then. There is a separation between the decision to shoot and what came before it. The problem with putting everything together is that you in effect assign intent to shoot through the door retrospectively - as though he planned it all the second he picked up the gun. This is not the case. There are two parts to his actions and the questions about how reasonable his beliefs or bahviour were must depend on what he knew at the time or what he could foresee imo:
Before hearing the noise in the toilet:
- He thought there was probably an intruder(s) in the bathroom as Reeva was in bed (so he thought)
- He had the opportunity to escape or do something else at that point
- He only intended to shoot to defend if necessary
- He had the right to go investigate, armed, in own home as long as the weapon was only used in the event of being attacked.
- He gave the intruder(s) warning that he was coming so he gave them the chance to run away and so sought to avoid a confrontation.
- He didn’t know for sure that there was someone there at all times.
On hearing the noise in the toilet:
- He knew there was an intruder and where he was
- He believed he was hearing the door move (it could have just been Reeva leaning on the door to hear better – the magazine rack wasn’t the only possibility)
- He didn’t see the handle turn
- He was very close to the perceived danger so there was little time and potentially great danger
- He wouldn’t have had a chance in a fight and couldn’t run away on stumps
- Householders are permitted to shoot if they believe that an attack is imminent – they don’t have to wait for an attack.
That is the first step and then we can move on to asking whether what he did was reasonable in the light of the above I think. ie Was it reasonable to think he was under attack? etc
The mistake you're making, I think, is in your assertion that it is the State's role to somehow prove that Oscar's "terror" of the intruder isn't true. It's not, in cases such as this, where there's unlawful killing where it's undisputed who committed the crime the onus is on the accused to show why they feared for their life. That's why Oscar needed to take the stand. Not the other way round. After Oscar's interesting cross examination, Judge Greenland commented that, had he been presiding over the case, he'd have discounted his whole testimony. Yet based on your assertion that the State needs to prove what Oscar was or wasn't really thinking, at every step of the way, this would actually be advantageous.
Consequently, Oscar's state of mind at every single point of every single step isn't really the point anymore, and neither is his disability. Masipa did not find it relevant in her decision. I agree that what he foresaw is the most important question we've but left the wood moving, door handling palaver behind. The main question is : when a criminally responsible, experienced fire arms owner, with another method of escape, shoots four times into a closed door at a person who was unable to escape and then says it was an accident and he didn't mean to kill anyone, is this reasonable? If he didn't mean to kill anyone, what did he foresee? And if a Judge decides that this is negligent rather than murder is this reasonable?