Al-Tikriti was removed following an angry exchange with the chief judge, the latest in a series of interruptions and outbursts to have affected the hearings.
Earlier in the day, a U.S. lawyer for the defense, Curtis Doebbler, argued that a fair trial is impossible under the current circumstances, an argument consistently put forward by the defense.
The eight defendants are accused of crimes against humanity committed in reprisal for a failed assassination attempt on Hussein in 1982 in the town of Al-Dujayl.
(Reuters, AP, AFP)