Heard this on Mr. Overrated's press conference yesterday: http://http://www.dallascowboys.com/news.cfm?id=0796D08F-0441-38D5-6F5E4403D70C7FB6
his job now is strictly to run back kicks and be a #4 WR... he will never be in on run plays, etc... so he doesn't need the beef to block...
Given his likely role in the NFL as a KR/PR, and slot WR, he should be as lean as possible. If Parcells thinks he's too fat, he probably is.