Probably didn't make it down, certainly not intact. The huge flash likely comes from it breaking up.
how big was it?
Space educator Randy Atwood says "no bigger than a grapefruit".
I love the difference between Canada and US television. If that had happened here, he would have been referred to as an "astronomical expert", but instead there in Canada he's just a "space educator".
Oh, don't worry, we're just as bad as you guys with our "experts". The guy probably heads up the school visit department at the local planetarium.