Asked by reporters after the hearing on Monday if he was nervous about what lay ahead in the case, Rudd replied: "No, the only thing I'm nervous about is I don't, I don't actually don't know what's going on."
AC/DC Drummer Phil Rudd Arrested Again in New Zealand
Asked how he would be spending time on bail, he responded with a lopsided grin "Self-improvement," before his lawyer hustled him into a waiting car.
Rudd's erratic behavior outside the courthouse has become a feature of his recent appearances. At one hearing he clowned around by jumping on the back of a security guard; at another he raised his middle fingers to journalists. He typically doesn't wear dentures, sometimes making his soft-spoken answers difficult to understand.
Rudd was sentenced to eight months of home confinement on July 9 after pleading guilty to threatening to kill a former employee and possessing methamphetamine and marijuana.
Rudd acknowledged in a court summary of facts that he'd offered cash, vehicles and a house to an associate after asking him to have the victim "taken out." He also acknowledged that he'd directly said to the victim he was going to kill him.
AC/DC's Phil Rudd Discusses Criminal Charges: 'We All Make Mistakes'
Police then arrested Rudd at his home on July 18, accusing him of possessing and drinking alcohol. He was subsequently given a new bail condition: that he undergo drug and alcohol testing whenever police request it.
It is unclear whether Rudd has any future with AC/DC, which is currently touring with Welsh drummer Chris Slade.
Rudd's lawyer Craig Tuck said Monday he is appealing Rudd's convictions and sentence.