I think this is the one that rang a bell. Flight standards skipper with huge experience one moment, and barking the next. There was some discussion at the time that these products may have been a trigger to a psychotic episode.
The young co-pilot of 9525 may well have been okay despite his history, but then an ingredient of these bizarre 'health' food things may just have been a trigger.
Yes, it's far-fetched, but there has to be a reason for the decent into such a deep disturbance. Just one line of thought.
Jet Blue
Osbon has been flying for jetBlue since the airline launched in 2000 and has a sideline selling weight-loss products, including a “shake mix that tastes like a cake mix.”