I've given some thoughts and rewatched games, etc. I'm starting to lean in the direction of football basics (tackling especially) coverage, endurance, as the problem. That is a coaching problem. This isn't necessarily Rivera either. Yes, he is the ultimate, I agree and blame should be shared. When players don't tackle, cover receivers, get down field with energy to make necessary cuts, etc. then the basics are falling off. The coaching staff needs to get those issues corrected. We have talent on the team and good coaching can make that talent great.
'A punt is a good play' keeps me focused on Fox ability to coach. If you all remember the Panthers made a lot of punts that year. If Denver wins the SB I wouldn't relate it to John Fox's ability as a coach. I think his mild mannered coaching ability is what Manning needed to direct the offensive line as he deems fit. Manning and Elway coach the Broncos.