That's always a possibility if the nigger lawyers want maximum exposure.
He's going to have to talk fast to get around the fact that his client has confessed to the killing.
Judges really don't want to set a precedent of expanding the rules around self-defense, so that self-defense plea is a huge problem.
The jury, no matter how niggerfied, doesn't get to decide whether the evidence supports self-defense. That's all on the judge.