Changes any screensaver hot corners settings that are "Disable Screensaver" and reload the dock if changes are made. Put this as a launchAgent that runs all of the time :)

hotCornerRemediation.sh

#!/bin/bash

# Changes any screensaver hot corners settings that are "Disable Screensaver" and reload the dock if changes are made.

user=$( scutil <<< "show State:/Users/ConsoleUser" | awk '/Name :/ && ! /loginwindow/ { print $3 }' )

tlcorner=$( defaults read /Users/$user/Library/Preferences/com.apple.dock wvous-tl-corner 2>/dev/null)
trcorner=$( defaults read /Users/$user/Library/Preferences/com.apple.dock wvous-tr-corner 2>/dev/null)
blcorner=$( defaults read /Users/$user/Library/Preferences/com.apple.dock wvous-bl-corner 2>/dev/null)
brcorner=$( defaults read /Users/$user/Library/Preferences/com.apple.dock wvous-br-corner 2>/dev/null)

dockChanged=false
if [ "$tlcorner" = "6" ];
then
	defaults write /Users/$user/Library/Preferences/com.apple.dock wvous-tl-corner -int 1
    dockChanged=true
fi

if [ "$trcorner" = "6" ];
then
	defaults write /Users/$user/Library/Preferences/com.apple.dock wvous-tr-corner -int 1
    dockChanged=true
fi

if [ "$blcorner" = "6" ];
then
	defaults write /Users/$user/Library/Preferences/com.apple.dock wvous-bl-corner -int 1
    dockChanged=true
fi

if [ "$brcorner" = "6" ];
then
	defaults write /Users/$user/Library/Preferences/com.apple.dock wvous-br-corner -int 1
    dockChanged=true
fi

# Reload the dock if it has been changed
if [[ $dockChanged == true ]]; then
    killall Dock
fi