"Carlos Zambrano went on the offensive Monday, filing a grievance through the players union for his 30-day stint on the disqualified list and telling Comcast SportsNet he doesn't "understand" general manager Jim Hendry's harsh disciplinary action.

"He's always been good to me, but this one, it makes me sad," he told CSN's David Kaplan on "Chicago Tribune Live."

Zambrano insisted he was not serious when he told clubhouse personnel and trainers Friday that he would retire, and that he fully intended to return on Saturday, only to be informed by his agent not to show up. He also said he wasn't trying to throw at the Braves' Chipper Jones in the incident that led to his ejection, and that he was being "punished for something" he said in private.

Mostly, Zambrano seemed upset that his remarks about "retirement" wound up in the media.

"I say something in the clubhouse, that has to stay there," he said. "That's our home. I didn't say nothing to the papers. I didn't want to talk to the media."

Left unsaid was why Zambrano cleaned out his locker and left without telling manager Mike Quade or assistant GM Randy Bush, who was in Atlanta while Hendry scouted the Double-A Tennessee team.

Both Hendry and Quade declined to discuss Zambrano's remarks Monday.

"There's nothing else to say," Hendry said. "The process will run its course."

Quade added: "It's not on my radar. I'm not dealing with that today, that's for sure."

Neither Hendry nor Quade has heard from Zambrano since the incident."