Typos are seperate and discrete accidents. But in a stretch if inversions are frequent , one could say a motor dyslexia could be a cause.

It may also be apparent that dyslexics may be unusually defensive regarding defending themselves against charges of laziness, stupidity and/or insanity.

But if I were caught writing notes on my hand or accidently inventing a word that is phoneticly close to the correct word, I would not defend it in the absurd manner as Sarah Palin.