"Are or should the other 28 teams not playing next weekend make coaching changes? Should the three left who don't win the SB?"
No, but yesterday's game had a glaring weakness on the offensive side of the ball; personnel wise and coaching wise. You always need to improve as a team whether you win the SB or go 0-16.
"Did Garrett do anything right this year?"
Of course he did, but most of his good games were against mediocre to below-average defenses. Look at the offensive production against good to great defenses:
Denver: 10 points
Green Bay: 7 points (last minute TD)
Washington: 7 and 17 points
San Diego: 17 points (last minute TD)
Those were the best defenses we've played all year, and all mediocre to below-averages performances.
"How do you think he did the past month, full year?"
If you're talking about December, I think he did an average job at best. We should have blown the Giants out of the water, but had 17 points and scored a last minute, worthless TD. The New Orleans game was the best gameplan he had all year in my opinion. We started fast and the players executed very well, but only scored 7 points in the second half. Our defense made big plays at the end of the game to seal it for us. The Washington game was a mediocre offensive performance as well. Philly was a perfect matchup for us because the Eagles are so one-dimensional. There was hardly any pressure on the offense to produce serious points because the defense was playing so well. 14 points in two games? Not a lot of pressure.
"Did our offense improve over last year?"
Statistically in YARDAGE they did, from 13th to 2nd.
In points we went in 2008 (22.6 points per game) ranked 18th to in 2009 (22.6 points per game) ranked 14th. So we moved up 4 spots, but averaged the exact same amount of points.
"Could our failings yesterday be the result of anything other than Garrett?"
It was mostly Garrett, but obviously Flozell going out was a killer. It's the adjustments Garrett didn't make after Flo went out. He gets stubborn and keeps running that delay-draw play against the best defensive line in football. When Felix finally got the offense moving, what does he do? He takes him out, puts Barber in and we get a negative play. This guy just doesn't get it.