Wilson, 33, was the alleged triggerman in the 2008 shooting death of Ronny Ferguson, 49, at the Ferguson home at 422 Long Avenue, Rockmart. Two others, Alfred Fennell and Melissa Henderson-Smith, were also shot in the incident.
Superior Court Judge Michael Murphy began Tuesday’s arraignment calendar by stating Wilson’s case, added after the initial calendar was set, would have to be postponed.
Murphy said the court needed an “indispensable witness” in order to proceed.
Officials said the necessary witness was Wilson’s former attorney Victor Long.
Wilson’s new defense lawyer is arguing that his client’s guilty plea should be withdrawn because of incompetent counsel provided by Long.
Officials said defense counsel did not serve Long with the proper paperwork to force him to appear.
A new court date of June 26 was set with the case expected to be heard at 9:30 p.m.
Wilson’s guilty plea came in the middle of his 2009 trial after Fennell’s testimony put the gun in Wilson’s hands during the incident.
The charges Wilson pleaded to are felony murder, aggravated assault with a dangerous weapon and possession of a firearm during the commission of a crime.
Murphy, who was the judge in Wilson’s trial, sentenced Wilson to life with the possibility of parole on the murder charge, 20 years on the aggravated assault charge and five years on the firearm charge, totaling 125 years.
Wilson decided to withdraw his guilty plea in March.
Kionte Rashad Glover, the 17-year-old with Wilson during the incident, was the second person convicted in the case after his April 2009 trial.
Glover was sentenced in May 2009 to life plus 25 years on charges that include felony murder, three aggravated assault charges, and a firearms charge.