There was a wild pitch/passed ball, Zambrano was covering home and it looked like he tagged out Nyjer Morgan before he touched home but the ump called Morgan safe. So then Zambrano started screaming at the umpire and got ejected. Zambrano then made a motion like he was trying to eject the ump, threw the ball into left field. But the best part was, he go's into the dugout and gets a bat and just starts smashing the gatorade fountain.
Rotoworld probably explains it better then I can.
Very entertaining to watch to say the least.