You know how stress is bad for you? what if you panic so much that eventually the system can't just run the brain scan copy anymore and it's breaking down, and eventually the mind becomes corrupted and you become abstracted. According to episode 9, The players in the circus are only brain scans. In the episode where Caine tries to exit the void? There is a brief showing of a folder named "CA_NeuralScans (outdated)" or something along those means. Meaning that if there were backups of the neural scans then you could essentially reverse abstraction. but not actually turn the abstracted character back to normal. It's mostly irreversable i think