Ah, “saved” is such a big word in this case. He was very self-aware, and I do believe he was scared of himself, of what he had done, and of what he would continue to do if he were ever free again. He told it himself to an officer that they need to be careful because if he ever had the chance he’ll probably try to escape again. Having a daughter only reinforced his position and I do believe he was truly terrified of the idea she could end up being the victim of a “Ted Bundy”. Killing was an addiction, and if, in 1989, they told him “you’re good to go”, you can bet it wouldn’t have lasted long before he start again.
So, was he “saved”? No, he couldn’t be saved from himself at this point. I do think that praying, reading the bible,… was some sort of comfort blanket to him and who knows what he believed in the end?