Would be nice to see a plot of the aircraft attitude rather than just a few AoA data points.
At one point they say the AoA reaches 40 degrees. It's tempting to think this means the nose is pointing at the sky but that's probably not the case. I mean if they are descending at 100kts vertically and flying horizontally at a similar speed what would/could the attitude be to achieve a 40 AoA ? Could the attitude be close to level?