49ers mailbag: Dissecting defensive doom, Shanahan’s fate

SANTA CLARA – Before shipping off to Green Bay and then Buffalo over the next two Sundays, the .500 49ers (5-5) have some questions to answer, or at least we do in this Week 12 mailbag via our social media fan club:

Can you please ask Shanahan why he’s so conservative with his fourth-down decisions? (@FowleBall15)

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