I say kill him, don't care how, but in the future if your gonna let one out you gotta first: pour acid on their face and blind them, castrate them, cut off their hands, remove one kneecap, install a taser system to go off every ten minutes and tattoo 'child molester' on their head.
I could follow the rest of your post but couldn't figure out the one kneecap part. Is that for identification in case tattoo was overlooked? :-)
Very creative.
I like the way you think.