If that's what the state is resorting to in order to prove their case or to disprove Oscar's account ....then they are in big trouble!
The killer must prove his admitted shooting of the victim was an exception to SA murder laws.
The killer now has provided varying and contradictory accounts of material points in his alibi, both sworn under penalty of perjury.
The killer has also admitted that he signed a sworn affidavit that was materially false, and until questioned about it, did nothing to correct the error.
It is the killer who is in "big trouble" because he shot four times at his girlfriend who he claims just spoke to him and went into the bathroom to pee, and none of the versions he offered to explain his actions are reasonable.