Allgier was probably on the short end of the stick of life, poor misbegotten and woeful soul.
In a scene in West Side Story, they say it best ..... "I'm depraved onna' count of I was deprived, yeah! dats' it, depraved because I was deprived"
This lad you say is beyond redemption and indeed many cons are beyond hope but you can't toss them into the dust bins of some jail, alone and without hope or purpose.
Poor lad probably never had a family that cared or had nurturing qualities to entice the beauty that is within to flow forth enriching any and all.
He had no framework or concepts of society and all that it could yeild had he just been exposed if for just a moment.
Mozart ....... yes ....... Mozart's opera Le Nozze di Figaro .... as played in the Shawshank Redemption. Seeing all of those hardened men with their eyes raised in undersanding ..... simply an experience that inspired awe.
and if dat' don't work tossin the key probably ain't a real bad idear?