Leaving was the easiest decision to make, and the hardest action to take.
Clearly, it was better not to have to work for such a person. But on the other hand, if he left, he'd be leaving his co-workers to face her incompetence and maltemper himself.
What was he supposed to do? He had "Assistant Manager" on his resume now, it'd be easy for him to find other work. But over the past 6 months, he'd become good friends with a lot of his employees, who were all fun, smart people.
But, but he looked for another job. And he...