Try it next time you're in the hangar, wearing three layers of clothing, an immersion suit (ours, not yours) and a LAPP jacket. The handle is not above your head.
It was something that emerged in the G-REDU investigation, and explains why the starboard door was opened normally and not jetissoned. The AAIB were incredulous.
I would have thought that two experienced pilots would have been better witnesses to the actual occurrence than a CVFDR
Maybe they haven't been in a medically fit state to speak yet?