Debunked numerous times on http://www.reddit.com/r/MH370/ -- a good resource if you like armchair neckbeard analysis
Also Goodfellow's theory becomes even more unlikely if it's true that the programmed change in direction occurred 12 minutes before sign off[1].
Either way the speculation run amok from the U.S. media, namely CNN's television coverage, is atrocious.
[1] http://www.cnn.com/2014/03/18/world/asia/malaysia-airlines-p...
http://www.reddit.com/r/MH370/comments/20kdna/mh370_another_...