I'm not seeing it personally.
Brady had more attempts this season (2012) than in any other year, and the numbers have grown substantially from the offense's record pace set in the 2007 season.
2012---637
2011---611
2010---492
2009---565
2007---578
If anything, the Moss years proved to be the most pass-happy years that we've seen, and those years fail in comparison to his attempts now. That is also taking into acct the use of hurry up, which probably averages at about 10 more plays per game on average usage.
I think the average ratio has been approximately 59/41 pass to run in Brady's years, although this is a number that I remember from a discussion either last year, or the year before.
The ratio this season was 56/44 pass once again, so even though it looks like we're rushing more significantly some of the numbers are skewed due to the fact that there are more actual plays per season due to the hurry up.
Either way, the team showed more balance which was definitely needed. The point is that I'm not necessarily sure that we can definitely take away the premise that they are now moving to a 3 WR, run-first attack though.
New England Patriots 2012 Statistics - Team and Player Stats - ESPN
One can say that brady could be suffering froma dead arm, but i don't want to go that far.