The Bull's front office and coaching staff are always feuding. All they way back to the Phil Jackson days to Scott Skiles to now Thibs.
I honestly have no idea how good Gar Forman is. I just think it's better to have a clear separation of duties. Coaches coach. GMs take care of other stuff, including hiring/firing of coaches. I used SVG because he's currently available. That's all. But for me that's the thing. There are always good coaches available. JVG even once said that a lot of the differences between NBA and non-NBA coaches is simply opportunity.