How to make fearless deadly stoic volatile prisoners do their time?

In Prison Architect, there is a particular nasty combination of traits that can make a prisoner essentially impossible to jail conventionally. It's a combination of the following:

• Fearless making suppression using Armed guards or Snipers not work to control their violence.
• Stoic making punishment (such as permanent lockdown or solitary) not work to suppress them either, or, alternatively, Gang Leader making permanent punishment a poor decision due to the rather large amount of tension this causes, leading to riots.
• Volatile leading to violence even if all a prisoner's needs are met perfectly, and there are no targets for violence inciting them (e.g. Ex-cops and the like).
• Deadly making any contact with guards, other prisoners, or other personnel when they decide to act up turn into murders with surprising regularity.
• Bonus points for Tough which can cause Tasers to fail, making it more likely the prisoner gets in a few punches to abuse Deadly.

It is not that rare for a prisoner with a bad combo like this to show up. Special Legendary prisoners quite often tick all the boxes.

Each year in prison architect is, I believe, 5 days. Murder is punished with a 25-year sentence extension. AFAIK, prisoners cannot die (from old age, that is). This means a deadly prisoner should have, at most, a tantrum near any other human being and a successful crit roll once every 125 days, or they will rack up murders faster than they can serve time on them, never actually getting released.

Of course, it's trivial to engineer a situation where eventually the prisoner ends up killed. Walling them in or having them get repeatedly shot by freefire snipers or armed guards are both ways to achieve this. That's how I've been doing it lately, but it seems a bit off. I'm supposed to be running a prison, not a firing squad.

The real, proper solution to dealing with these murdermachines would be to somehow construct a situation where they get the minimum possible contact with other human beings. That is, give them their own personal canteen, yard, and cell, their personal cell block or PCB, and use remote doors to control their movement. Basically, handle them as you would handle a Velociraptor: Use only remotely controlled devices to dictate their movement, having supporting staff like janitors only enter their rooms when the prisoner is not present. Unfortunately, to handle the endless property destruction, the prison manager can't just setup the cell to gas the prisoner with tranquilizer or anything that convenient: they have to use these little AI units called 'guards'.

Said guards haven't got the memo that going anywhere near a dangerous inmate is a suicidal life choice. Instead of firing their tasers through the cell door at the inmate, guards often want to open said door (or, if it's a remote door, wait at the door for it to open or get smashed by the prisoner, who can, for some reason, punch out a thick solid metal door). Worse, after missing or getting their taser resisted, guards foolishly attempt to engage the deadly prisoner in melee.

Worse, staff won't consider closed remote doors as pathable, or realize that a remote door is about to be closed. Meaning that loads of expensive staff members get stuck at the door. Pressure sensors canont distinguish between staff and prisoners, so it's not like I can build them an emergency exit that doesn't also serve as an entrance. Nor is there a way to schedule the janitors, cooks, and repairmen to only enter the various rooms of the PCB at specific times so they don't get themselves trapped in there with the madperson. Nor is there any type of device that sends an ON/OFF signal when there is/isn't a prisoner in the room so that when the prisoner fails to obey the schedule, even if the staff would work, they can still end up trapped.

I've tried automated remote doors. Either I'm 'doing-it-wrong', but they just seem to cause more pain than they prevent without door control systems, which defeats the point.

Anyone ever got one of these prisoners to actually serve their sentence? Got any tips?