The rapid decompression is starting to actually make more sense. Possibly knocked out the transponders, pilots notice too late for oxygen, make a turn toward the only direction the airplane would be guaranteed over water when the fuel eventually runs dry.
I'm disgusted to see all the news reports and internet posts suggesting the pilots had a sinister plan. I like to think anyone trusted to fly pax is also going to be fighting the airplane until the end, unless proven otherwise. Just my .02¢.