Do you want to set the program back another year?
Keeping Pastner wouldn't really be setting the program back. We're at a similar point as when we had Gregory. You make the change only if the roster is going to get significantly worse by not making the change. With Gregory that was an obvious thing looking at what we were losing vs what we were bringing in. With Pastner, at least in the immediate future, the roster is likely improving with next years class.
Right now there are only two good reasons to get rid of Pastner. The first is you have a great hire already lined up. If that's the case then make the move 100%. If not, the only reason to fire Pastner and go thrift store shopping for a coach is if you think there is no way he can bring in a quality 2021 class and so the roster is destined to just tank if we keep him. If we think that then sure, make the move, but otherwise you're just locking yourself into a probable bad hire for 4 years with no real reason to think it will help the program. At least with keeping Pastner you remain flexible to take advantage of possibly the right fit coming available at the right time.
Generally a HC would throw his assistant(s) under the bus and revamp his staff when the product on the court/field is this bad. Unfortunately I can't imagine any ACC level assistant joining this staff in the offseason as CJP is likely going to be perceived as dead man walking.
I'm not so sure. It would be a big opportunity to significantly elevate your stock. If an assistant came in and immediately made us competent on offense then they would be seen as a great commodity and likely have a quick turn around to a head coaching job. However if they don't immediately turn it around, and Pastner is fired, then the assistant is likely viewed as just collateral damage and likely isn't hurt much. Basically I doubt Nate Woody is seen much worse because his one year here wasn't good and then he was let go when Collins came in. In any case, I think this is the thing you have to try to make an impact if you do stick with Pastner.