Suggests to me the arm is hurting pretty badly:
http://www.ajc.com/s****ts/content/s****ts/braves/stories/2008/04/29/smoltz_0430.html
And this sounds to me like he may retire after this season:
"Right now I'm sitting at ground zero, taking it day by day, looking at
every option to help this team get to the playoffs and end my career the
way I'd like to end it."
Colin