If you or I had been without nutrition and hydration for 5, nearly 6, days, it is doubtful that we would be able to communicate effectively either. Considering Terri's disability, the fact that she has been without food and water for such a long period of time, AND considering she may be receiving morphine, I don't find the physician's statement surprising at all.
http://www.nationalreview.com/pdf/Affidavit.pdf <-- March 23, 2005 Neurologist
Read it for yourself instead of taking ABC's word for it.