In a great piece by Roger Rubin and Kristie Ackhert, the Daily News brings us news that Santana isn't, in fact, fully recovered from his offseason surgery. Santana had this to say when questioned:
"After the last surgery I am still recovering from it," he said. "Having bone chips in my (left) elbow changed my mechanics a little bit. But I feel much better now. ... I am making progress and I'm adjusting." - NY Daily News
I don't think this really comes as a surprise to anyone who's watched Santana consistently this year. It's quite obvious he's still trying to get a feel for his pitches and mechanics. He mentions his '04 season when he pitched to a 5.50 ERA in his first 12 starts after offseason surgery and the great bounce back he had after that. So maybe we are all freaking out a bit, as Santana knows his body better than any of us ever could.