No, the offensive staff needs to go for the most part.
Keep Kitna, and maybe Moore, though I am not sold on him yet. Depends if he is really handcuffed or not in play calling or game planning.
Nussmeir, not sure about, the TE's don't seem to be developing, though Jarwin looks very good, but I keep reading about his lack of blocking.
Ray Brown as RB's coach must go, I been saying that for years.
Colombo, OL, I would be ok with keeping also.
Lal with he WR's, maybe, but has he really helped, as the players have talent, none developed.
So maybe keep them, that would be ok I guess, except dump Brown.