SeniorDispatcher,
Trying to read between the lines (and between the airports....), looks like a low ceiling, yes.
But wasn't there a mention of a "mayday", and a witness mentioning "aerobatics"?
Loss of control under IFR? Mechanical failure? I'm not going to start the guessing game.
But I don't envy the NTSB investigators that will have to come up with a "probable cause".