Like I said in my earlier post, 16 seconds into the video he is already applying right aileron, and that's a fair time before the actual crash. So things are going awry quite early on in the turn?
The accident was in a very public place and I suspect that there is some much better footage of the lead up to the accident around and accessible to CASA for the inquiry. Until any of that comes to light in a public forum I don't see that there is much more to be gained here.
Steve