I don't know exactly how important that is, as it doesn't really seem that "big" or anything to me, although it seems like a constant eruption of dark mass. If you switch to the cor2 ahead, it shows some pretty massive flares or ejections.
Also note the "smoke ring" at the top right of the screen starting 20121223 at about 10:55... I've never seen anything like that an it has to be MASSIVE. Wtf is that? Ever see anything like that before?? It's literally a perfect ring that drifts up and out of view