-- Stop. Just stop. Some of your thought processes on who should or should not be let go are so painfully shallow. If coaching ability were based solely on onfield results, then offenses that finished in the bottom half of the league each year would just fire their OC's, and the same for defense.
-- When a good head coach evaluates his staff, he is looking for so many things, personality, symmetry, you name it. But when it comes to evaluating there ability to do their job, that comes from deep video research that 99.9% of you are not doing. Neither am I, by the way. He watches the film, often cut to look at what he is focusing on, and evaluates from that. If he looks at Grubb and sees that the alignment by the defense is causing Smith to audible to the pass too often, then Grubb is not really giving him the most effective run/pass choices at the line. As for Huff, he might have zero say on where a lineman is supposed to be, and is only responsible for coaching them on what to do when they get there. If the coach sees marked improvement and understanding, especially from younger players, that is a plus for that coach, even if the results aren't showing on the field yet. He may feel he has good offensive position coaches, but the "coordinator" for that side of the ball just isn't tying it all together well enough. THAT is how an OC gets cut loose, while the position coaches below him stay.
Mase