"a whole lot more" he could reveal about the controversial case.
The judge had broken his two-year silence on the TODAY show earlier that morning to describe Anthony's "manipulative" manner and secret expletive-filled outburst against her attorneys.
"I was interested in his observations of overhearing Casey in her holding cell because I was not privy to that," Ashton told RadarOnline.com.
Because of the judge's access, Ashton said, "I'm sure there's a whole lot more he could tell if he wanted to."
But there were times, the Florida prosecutor added, that Anthony's controlling -- and sometimes violent -- nature exploded in front of everyone in the courtroom.
"It was very obvious to those of us who were watching everything that she did that she was not this totally wide-eyed, naive young girl," he explained. "She was always in charge. I remember watching a hearing that we had one time and watching her actually smack her attorney Jose Baez in the arm ... The judge was right. It was two very different faces of Casey Anthony: the one the jury saw and the one the rest of us saw."
That same jury ultimately acquitted Anthony of the murder of her two-year-old daughter Caylee, in a decision that outraged many. Still, Ashton insists, justice has been served.
"The system worked in the way it was intended to work," he said. "It may not have been the way we thought it would be, but Casey's life will not be a pleasant one. And we'll have to wait and see what happens."
Anthony is still embroiled in a civil trial and bankruptcy proceedings.
Meanwhile, another high-profile trial has taken over the headlines in Florida: George Zimmerman will be on trial beginning June 10 for the alleged murder of Trayvon Martin. And Ashton says he's already reached out to the attorneys involved in that case.
"I've spoken to each of them at some point in the last two months," he revealed. "My only advice to all of them is to try to ignore the stuff that's going on around you and just stick to the case. .... It won't be difficult for them at all because I know
they're good lawyers."
No matter what happens, he admitted, "It'll be fun to watch!"