The system is so poorly designed, who's to say his unusual behavior will be handled properly? That second 10K might just disappear. He let curiosity override the rational, cynical side of his brain. It happens.
Say what you want about the software, but that 10k won't disappear.
If I were rich, sure. $10k for Me is like $0.10 for Bezos.
But with your last $10k? That's just stupid (or fiction)
... and even if I did, I wouldn't dare to use the adverb "accidentally" to describe what happened.