Is it just me, or does it look like the engine in the picture had not been turning at the moment of impact. If it had, you would expect fractured or bent blades all around, not just on one side, wouldn't you? Could suggest they suffered a flame out.
I don't see any blades visible, non-rotating struts yes.
Of course the pics are4 quite low in resolution so far.
Occams razor suggests the most likely scenario is the engines were on the bottom of the wing when it hit flat shearing away all the soft structure around the engines (Large diameter cases and nacelle0, but leaving intermediate case behind the fan mostly intact.
Let's wait and see if any better photos show up.