Some sage advice from directanywhere, alien role, ohallen et al. Anger is normal in this situation but if you let it define you, it will only make you a lesser human being. It will most definitely not help your lot in this mess, and the people at the top of your ex company sure as hell don't care about or feel your anger.
Move through that phase as quick as you can and you will be personally much better off, and professionally much more employable.
As good as QF may appear to be, all they really are is simply one company in a huge world out there. With open eyes and the right attitude this will come into focus.