I think there's a rift between PC and Wilson, because PC appeases but doesn't really change much, and I think Russ doesn't feel like he's been taken seriously in house, nor does he believe that things will change by keeping things in house, so he's nudged via media, and he's frustrated. I feel the problems are mostly due to Carroll's offensive philosophy, he's rigid and his schematic limitations are lending to Wilson having to do too much, and to get hit, and they've been long figured out.
Wilson had to do something because he wants to get to the Superbowl and win it not go one and done in the playoffs and get killed in the process. Carroll's schemes actually have to be thrown out the window, he needs to keep away, hopefully they are actually doing that now with Waldron, it appears Wilson has lost faith after 9 years in PC to actually change much though.