I doubt Tomlin will be fired after yet another "non-losing" season, and on the hook for guaranteed money, but he may feel the pressure to step down if they don't win Saturday, and if he is able to workout a soft landing with a new team behind the scenes.
The problem is the Steelers need to have a plan A, B, C and D in place regarding his replacement before they fire him, or he steps down. They should be targeting some young up and coming coordinators right now. Part of me thinks that Brian Flores might be someone to strongly consider, but I worry he would be Tomlin 2.0 with more focus on defense with no clue about how to compete on offense. He also flamed out with Miami.