Sounds like throttle stuck open, loses control, crashes, triggers predetermined explosion. Sounds perfectly plausible.
Drone attack? Ridiculous.
The Austin, TX evening news tonight was talking about the 4th celebrations and that they were adding **more** drones. There was one photographed downtown a month ago during some celebration that many said was faked but it wasn’t. If they didn’t believe in one then how are they going to deny *more*?