There is a lot of "gray area" here.
Yes, Fleck said some nice things about Kill when he took over. And then Fleck talked about the program 'starting over' and having to 'change the culture.'
Someone looking from the outside might interpret 'starting over' and 'change the culture' to mean that the previous coaching staff was going something wrong that needed to be fixed. On the other hand, a Fleck supporter would say Fleck meant he wanted to take the program in a different direction - that it was not meant as a slight against Kill.
Maybe Kill is dead wrong, and he misunderstood everything Fleck said. But, I think a reasonable person should be able to understand how Kill might have seen Fleck's comments as dissing the previous staff and their efforts.
If your business changed management, and the new manager said they had to change the culture and start over, would you take that as a ringing endorsement of your efforts under prior management - or would you perceive it as a criticism of your efforts under prior management?