All bets are off now.

Reuters reports: Radar Data Suggests Missing Malaysia Plane Deliberately Flown Way Off Course: Sources

Associated Press:  1 US Theory Is Someone Diverted Missing Plane

New York Times: Satellite Firm Says Its Data From Jet Could Offer Location

How Can An Airliner Just Disappear?  The same way your Porsche disappears from your driveway.

Someone steals it.