Its easy to be the one rolling the dice when you don't have money on the table. Is he willing to fork over the buy-out as well?
The reality is that few people alive right now have ever had to experience a Nebraska football team having to rebuild. Therefore, they don't know what it takes. Meanwhile, they notice a few teams out there who have hired new coaches and seen immediate success. So, they assume that the only way to achieve success is "immediate". If it doesn't come immediately, they want to pull chocks and start over.
That isn't going to happen this time. If SF decides he needs to replace some assistants, it will happen. But no amount of fan unhappiness is going to cause him to do it just for the sake of "appearances". Might as well sit back, tolerate the remainder of the season and support Frost and Company while they pursue improvement in the off season. Nothing good is going to come from grousing and creating a negative aura around the program.