This was broadcast on "Al Jazeera America" highlighting the case of death row inmate Willie Mannings.
JB: When you heard about the FBI sending out letters that there was bad testimony about the forensics in your case and a whole bunch of other cases, how did you react to that?
WM: That was a huge sense of relief, especially because it sheds a light on so many other cases where this has happened. I believe that the State knows that they have an innocent person incarcerated.
"I believe" is a weak assertion. To "believe" allows for others to believe otherwise. He does not state that the State knows they have an innocent man, nor does he state that he is, in fact, that innocent man.
JB: If you had to boil it down in a nutshell, what do you want people to know about your case?
WM: We should take a closer look at the system as a whole. My case will bring a lot to light. I don’t believe that there’s any perfect system. But this is not as advertised. This system is broken. You have many, many, many more Willie Mannings out there, who came before me and as long as the system stays the same there’ll be many more coming behind me.
To avoid a reliable denial by bringing forth "many, many many..." is not expected. Evidence being faulty is different than "I didn't kill..." Any of these questions, from de facto innocence, should produce the reliable denial which uses the pronoun, "I"
JB: What is your hope for the future? Do you think this is going to work itself out?
WM: One day. I thought it would be a lot sooner. I thought it’d be back in 1997 or so. But when you have innocent people, then you have innocent people for real, and those who are for real can never lose hope.
The subject does not say that he did not do it, nor does he directly state his innocence.