No, but it does look like he was turning very hard.
All these horror stories of the Gnat hyd system makes me grateful I did the last RAF Vampire course, and my QFI tour of the delightfully benign JP 4.
I still find it hard to understand the cause, frequency, of G -loc when guys are wearing G -suits. Never saw it on the JP, no G- suits and max rate turns at sustained 5.5/6 g on some quite old (ish) refresher students.