I tend to think that's outright paranoia. Check this out...
"But the fact that he hadn't pitched since Friday erased the thought that he was simply battling fatigue."
The flipside of the coin, of course, is that A) his complex mechanics require him (and any pitcher like him...Henry Owens, Jorge Sosa, Scott Kazmir, and Carlos Villanueva all come to mind) to throw often; perhaps he wasn't throwing enough during bullpen sessions and/or B) he's simply pitching THROUGH tendonitis. Certain pitchers (Aaron Heilman this year and Braden Looper with the Marlins and Mets are good examples, and I believe David Wells has thrown through tendonitis as well) CAN throw through mild tendonitis, but it lessens their velocity and effectiveness. Often, a sign of this is when a pitcher's breaking ball turns ineffective and/or he stops throwing it because it causes pain.
I severely doubt it's time to hit the panic button on Mike Gonzalez.
"They put me in the Hall of Fame? They must really be scraping the bottom of the barrel!"
-Eppa Rixey, upon learning of his induction to the Baseball Hall of Fame.
Motafy (MO-ta-fy) vt. -fied, -fying 1. For a pitcher to melt down in a big game situation; to become like Guillermo Mota. 2. The transformation of a good pitcher into one of Guillermo Mota's caliber.