Our Dallas Cowboys' Rookies Hit the Wall?

Good question posted by sago1 from a sport forum:

Since the bye week we have looked sluggish & I think our rookies have hit the wall, particularly Pettiti & Ware-- Pettiti has played every offensive down and Ware has played extensively (he also learning new position and being doubleteamed). Same goes for Spears & Canty, although being rotated constantly has helped. The only rookies with any zip left are Barber (didn't play much til 5th game & Burnett who just now getting playing time. Don't see how Parcells can overcome this problem--cause the bye week didn't solve it. Didn't get to see the game here in Florida but from what I understand our OL isn't getting the job down. Pettiti hitting the wall explains him and Tucker will never replace Adams. Johnson lacks strength/size (although I wonder if in offseason he can increase strength and learn leverage) and gets pushed back and Allen/Riveria unable to help him and also the tackles. Since Parcells doesn't trust the OL to protect Bledsoe, coaches are calling conservative game to prevent Bledsoe from getting killed and ending our season. Unless somehow Cowboys can turn up the volume in the Denver game, I now doubt we can beat the Broncos. Our OL no longer can protect Bledsoe enough so he has time to get the ball off and our defense is wearing down. Don't mean to sound pessimistic and maybe somehow we can turn it around on Thursday, sure hope so.