Stark alleges, among other crazy things, that the letter writer doesn't know he what he's talking about because half of the words in the letter are misspelled, and so somebody must have put him up to it. In the letter I count one typo in the lack of a capitalization of the word "Iraq". That's it, and that ain't "half".
If I were Stark's opponent the next time around, I would use the audio in a campaign commercial.
Cordially,
The way I heard it was that Stark said that since the guy couldn't spell, he must have had someone else write the letter for him.