Rotsa-ruck, Reorge!
As to the original topic: The delay could be security-related, and the engines may not have shredded, and birds may not have been sucked into the engines, and it still might well be an accident. Not to splash cold water on the theorists among us, but an accident has a better gut feel to this reporter of 20-plus years.
That said, a couple of observations: The vertical piece of wreckage from the tail (pardon my aero ignorance) seems out of place in the debris path. And is it really possible for both engines to detach from the plane before impact? Could a small device be planted on the plane's exterior and avoid detection? What would it have to do to take down a large plane?
I don't know. That's why I come here: to find out what I don't know.