the video's show that they had """Lost and Engine"""
There aren't any video's of the event happening that anyone has seen or admitted to.
Really have to wait until the Voice recorder and data recorder are read an analyzed. Even eye witness accounts are generally not realy reliable (as anyone who does accident investigations will tell you).
Some people have taken that the left engine is off the wing as a sign that it lost the engine. The engine mounts are designed to break if the stress becomes too high for the wing to handle. Its preferable for the engine to break free rather then tear the wing off the plane.
I was surprised to hear in some of the eyewitness acounts that people stopped to grab their luggage on the way out. (Guess I shouldn't be surprised, based on the number of people who don't pay attention to the safety briefing or think seat belt signs don't apply to them). If someone between me and the door stopped to pull their luggage out of the overhead or the seat in front of them, I would crawl right over the head to get out.