I was on the fence if he would keep your job until the Fleming statement. Nail in the coffin
I wouldn't necessarily say nail in the coffin, but I would firmly state Flemming's accusation opens up a huge can of worms for Kirk. Here's a guy that didn't have any past issues with Iowa as far as his character goes, he made a name for himself at WVU and then made it to the NFL. Why would he lie about his experience?
Also, looking at his story, you can now see some similarities between his, Wadley, and DJK's story. All three obviously mentioned Doyle as a huge problem, but they also pointed out that behind closed doors, Kirk was pretty awful. Because of that, you have to assume there is in fact validity to DJK and Wadley's stories.