Pastner is still young for a coach. There's still a lot of maturing he can do. When I was his age, I was in a really toxic work environment. A lot of pressure from management to cut corners in ways that could affect people's lives. Everyone was feeling the pressure and tempers tended to flare. I left when I was asked to do something that I felt was completely unethical.
When I left, I was thinking "Man, I showed those *******es." When the emotions died down, I realized that while I was in the right, I still didn't handle the situation as well as I should have. I didn't do enough to help my coworkers and actually made the environment more toxic in some ways. When I started my next job I went into it with the idea that I wouldn't let the situation get as bad as my previous stop. I think I'm a better boss, employee and coworker than I was then, and my working environment is 10x better.
I did some growing up between my last stop and this one. Hopefully Josh can draw on his experience in Memphis to do something similar. When the pressure is on, working relationships tend to sour. It sounds like that's what happened with him and Shaq. I'm willing to give him a chance and hope he's learned enough to keep the same thing from happening again.