Looks like a lunge to me and he totally read the corner wrong as you can see at his track position. This is what scares me off track days, I can't afford to replace my ST if I had a crash (my fault or not).
Must have thought how dare the ST be in front me me. Numpty, seen this many a times at track days when I was doing photos at them a few years back. At least he didn't grab a handful of brakes and wiped you both out, seen that many a times as well.