Finally, why did Vick stop throwing to Dunn? He was one the best pass catching RB's in the NFL and Vick rarely uses him. I think this one fact alone has hurt Vick's numbers. It's changed the defenses play him. Before they had to account for Dunn. Not anymore and to me that means they can drop their LB's back and defend the middle of the field better thus taking away many options for Vick. I really do not understand this at all. That has to be on the coaches as far as I'm concerned. It's probably the worst secret out there among defensive coordinators. Put Dunn in play again and I think Vick's number (passing and rushing) improve nicely.
Why would you blame Vick for this?In 2002, Vick and Dunn both played 15 games under Dan Reeves. Vick attempted 421 passes. Dunn was targeted 66 times and caught 50.
In 2003, under Reeves (and Phillips, who took over for the last few games), Dunn played only 11 games, but was targeted 52 times and caught 37 passes. Vick was hurt for much of that year.
So, under Reeves, Dunn averaged over 4.5 targets per game, including 4.4 per game in the season that Vick was the primary starter.
Since 2004, when Mora took over, Dunn has played 46 games, been targeted only 97 times, and caught only 76 passes. That's only 2.1 targets per game.
To me, it appears that Mora is the reason that Dunn is not more of a factor in the passing game, not Vick. Could be because they hold Dunn in to pass block more often, or because they simply choose not to target him in their playcalling.
Now, maybe you aren't meaning to blame Vick, but are really suggesting that the coaches should seek to involve Dunn more as a receiver. I agree. That is part of adjusting the offense to fit the players (both Vick and Dunn in this case), rather than fitting the players to the offense.
ETA: Also, when you say "why did Vick stop throwing to Dunn", compared to when? Dunn only caught 29 passes in 2004 & 2005, about 1.8 per game. This season, he has 18 catches in 14 games so far, about 1.3 per game. It's a dropoff, but Dunn wasn't really very involved the past two seasons, either.