But other than Oscar's story, what is to say Oscar didn't fire the shots, then call stander before doing anything else?.
That's a possibility - if he knew all along that it was Reeva in the loo, and that he had just shot her to death. Panic and horror, call someone to sort it all out?
No matter what I say... people can and will suggest alternatives... speculate.
It is unlikely that OP was so aware of an upcoming court case involving times of events, that he "faked" anything.
It is not likely that in the minute or so he thought "right, I have shot her, now I have to do all this stuff really fast, slot in a phone call early just to screw up the State case that might be made in the future... I only have a minute"
It was not just one phone call.. it was 3? a few seconds apart, including describing Reeva's injuries and so it was AFTER he had bashed open the door, dragged her body out and was kneeling over her in a pool of blood in the bathroom.
I must have missed the bit where he "described Reeva's injuries". What did he say, and to whom?