U-T San Diego (http://bit.ly/SVNtgH) says 32-year-old Eduardo Macias was handcuffed as he addressed the jury Wednesday.
Macias acknowledged using a smuggled razor blade to slash a fellow prisoner at Donovan state prison more than two years ago. But Macias said he was guilty of assault, not attempted murder.
Macias also told jurors he knew it was, in his words, "a bit awkward" to see him representing himself.
Last week, a judge said Macias had forfeited his right to an attorney after he cut his lawyer, William Burgener, in front of the jury with a blade he'd hidden in his mouth.
Information from: U-T San Diego, http://www.utsandiego.com