he Comanche is no aircraft I would like to be doing engine failures in below 5000ft.
Really, why is that? I've done a few hours in the Comanche a while ago and found them to be a comparitively good performer on one engine. They match or exceed the performance of likes of the Seminole and Duchess and several other twins.
I think you are being a bit dramatic with your comment, however like any aircraft doing silly things in them can kill you. I don't remember the details of this accident and can't be bothered clicking on the link so this comment may not apply, however some instructors do try to be too "realistic".