I'm with you on the cowling containing the failure, there is no other explanation why the cowling would disappear as one piece, the amount of force required to shear that module off the front of the engine is substantial. I really hope they will be able to recover the part but I fear we will never know which is going to make puzzling out how this could have happened extremely hard. Though the people working on these cases never fail to impress with their ability to retrieve the story from a pile of fragments you need to those fragments to begin with and the most important bits are missing here.