If it turns out that the captain kept schtum about his camera then Wg Cdr Spry et al would be well-advised to seek an independent assessment of how well-embedded the just culture is. Fact is, it's very easy to write about and promote, but very difficult to apply, and is therefore a prime candidate for 'tick box' implementation (much like another great mantra 'people first').
Meanwhile, even allowing that the captain might not have realised that his camera was to blame, the fact that P2 reportedly returned to a 'disorderly' cockpit does not reflect particularly well on the captain's grasp of the warning system or the AP functionality... especially since he was pretty much the only person strapped in suitably for a negative g excursion and should have been best-placed to recognise indications!
On the light side, at least we can be thankful this didn't happen at the hands of a TP. If it had, they might have followed the Tri* precedent and banned some perfectly usable AP modes! ;-)