I didn't say that murder is ambiguous.
I don't agree with your opinion as to what judge Masipa's options are. I don't believe anyone here is qualified to surmise SA law with 100% certainty. Law is more complicated than a three month study of it on the internet can possibly reveal.
Extreme situations can be considered in rendering a verdict, a man on his stumps may be considered an extreme situation. No one here knows what the judge and here assessors will use or dismiss in their assessment of this case.
Which is why many of us have been listening to attorneys and judges that have been giving extensive interviews during the trial and answering similar questions to ones that have posed here.