This is not a good scenario. The DUI could cost him a lot more time behind the wall, probably not "life", but if there were any injuries or property damage it could be significant time.
https://www.inmateaid.com/ask-the-inmate/on-parole-for-life-al-gets-a-dui-in-tn-pled-guilty-serve-time-been-2-months-since-plea-and-al-still-hasn-39-t-responded-yet-what-is-chances-of-him-going-back-to-prison-in-alabama-and-if-so-how-long-it-want-be-for-life#answer
Accepted Answer Date Created: November 10,2019