Possible Fix for TTT TOT Addon (untested)

fix.lua

-- Put this into '[SERVER]/garrysmod/lua/autorun/'
-- to toggle the survivalist role, type in chat "!tot_toggle_surv" as admin or in console "tot_toggle_sur 0"

-- add lua file
AddCSLuaFile()

-- add own CONVAR to toggle this survivalist de- / activation
CreateConVar("tot_toggle_sur", 1, {FCVAR_ARCHIVE, FCVAR_NOTIFY}, "Toggle survivalist role in Town of Terror addon")

-- add a command to toggle ingame
concommand.Add("tot_toggle_survivalist", function(ply)
  local b = not GetConVar("tot_toggle_sur"):GetBool()
    
  ToggleSur(b)
    
  RunConsoleCommand("tot_toggle_sur", tonumber(b))
    
  local word = "enabled"
  if not b then
      word = "disabled"
  end
    
  ply:ChatPrint("You " .. word .. " the survivalist role!")
end)

-- hook role selection
hook.Add("TTTSelectRoles", "TTTTOTFixSur", function() -- or maybe 'PostGamemodeLoaded'
    ToggleSur(GetConVar("tot_toggle_sur"):GetBool())
end)

function ToggleSur(b)
  if not b then
    RunConsoleCommand("ttt_survivalist_realmin_players", "999")
    RunConsoleCommand("ttt_survivalist_min_players", "999")
  else
    RunConsoleCommand("ttt_survivalist_realmin_players", "2")
    RunConsoleCommand("ttt_survivalist_min_players", "2")
  end
end

if SERVER then 
    hook.Add("PlayerSay", "TOTFixChatHook", function(ply, text, public)
        if ply:IsAdmin() then
            if string.lower(text) == "!tot_toggle_surv" then
                ply:ConCommand("tot_toggle_survivalist")
                
                return ""
            end
        end
    end)
end