I think some peoples definition of totally destroyed and mine must be different. What I find amazing is that someone thought writing a letter like that was a good idea. I think the professor was a lot kinder than I would have been. I'm sure it never occurred to the student or the moron who suggested they write the letter -but perhaps if the student had been paying attention and needed a little boost in grade he might have asked the professor if he could redo some of the work, or do something for extra credit to get over the hump. Yeah doing extra work - yikes that's just not right.