Saw this posted on Jalopnik earlier as they were following the events closely. Pretty sad affair and freak accident. I haven't seen a car lift it's nose off Flugplatz that high in eons. Nobody could have anticipated that barrier flipping a car over the catch fence like that.
Maybe, it's not that many years another GT3 car climbed over the tyrebarriers there, and as seen at Brands some years ago, even an MR2 can break the catch-fencing.
Another view (not graphic at all, you only see the start of the crash. Not even the car going over the tyres.)