If it truly is a disease, it's the kind of disease that should prevent someone from being an airline pilot in the first place, since they are unable to control their disease. If this was a "Denzel's-character" type, he should have never been a pilot in the first place, until that was somehow treated and monitored. If it was a one-time lapse, he should be fired for that lapse, as it's huge in this industry that demands precision and good judgement.