I heard the Lynch and Kyle exit interview from yesterday and Kyle directly responded to the Wilks question saying he hadn't spoken to any coaches yet but he expected everyone back.
My guess is that Wilks asked for more liberty to implement his system and/or coaches and he was told no. So he dipped (understandably so).
The Superbowl and the Jaguars game were truly the only two games I was impressed with what he did with the defense. I get people feeling
about him being gone but let's not act like this franchise hasn't made it a thing to give black coaches important positions and have had no problem promoting them. Sure, it's all about them comp pics probably but I don't think Wilks being black was the reason he's gone