When I was in college, I had a physics professor from Korea whose language skills left something to be desired. Periodically he would stop speaking in the middle of a sentence and the class would be left hanging. I always assumed that he was thinking in Korean and translating it into English as he went along, but would stop when he had finished a thought in Korean even if it didn't make a complete sentence in English.
I got a similar feeling listening to Sarah Palin explain her reasons for resigning today. It seems like she isn't thinking in the same language that she's speaking in.