Although it doesn't appear this had anything to do with the crash, I find this statement odd. Are there any pilots who can confirm this fact? When I was involved in producing aviation English course materials, I wrote a question along the lines of a pilot of a private one-engine plane giving a mayday call for an engine failure asking for a vector to the nearest airport and one of our expert consultants, a pilot, basically said that if you're in a single engine plane and it fails, you fall out of the sky and can forget trying to reach an airport.
engine failure - > no airspeed -> no lift - > plane stalls
Glider pilot here. This conclusion is wrong. You can't win the world gliding championships in a Cessna Skyhawk but it won't fall out of the sky just because the engine goes out.
By the way, Boeing 747s, 767s, etc. can glide too: http://www.askcaptainlim.com/questionsviaemail.htm