I don't think Marrone should be fired but the offensive debacle is definitely his baby. He's the offensive coach who brought in Hackett to help him run the show. I don't know for sure but I'd guess that Marrone has little, if anything, to do with the D. The offense better be fixed by next year of he should be on the hot seat. By "fixed" I mean middle of the road, it doesn't have to be great, it just has to stop being a liability.