Is Tom Brady Hurt?

My beloved Jets completely outplayed rival New England in their victory this past Sunday. Of particular note, Tom Brady had his second poor performance. Brady was off all day sunday continually missing his receivers who helped him out with a series of very nice one-handed grabs. Today the Patriots announced that Vinnie Testaverde is coming out of retirement to sign with the team. Tha Patriots have only one other QB on the roster, former USC backup Matt Cassel. The signing of Testaverde is curious. The Pats have gone this far with only 2 QBs on the roster. The signing of the veteran suggests that there might be concerns about Brady's health. After all, the most plausible reason for the signing is that they are worried that Brady might miss some time and need/want a veteran QB to back up Matt Cassel. Not exactly sure what is going on in NE, but this is something worth keeping an eye on.