[Corbel]

i have never lost cabin pressure so i cant say whether or not if the "smoke" you saw was part of that, i dont know. but there are 2 ways that flight attendants can open those oxygen masks compartments (which im not going to say, cause under my company policy its SSI) you probably weren't told because the pilots are so busy in the flight deck under normal operations before landing i couldn't imagine the chaos up there during an emergency situation, i just know what i have to do from my training, and i can only tell the passengers what i know from what i hear from my pilots. the pilots also have a way in the flight deck to drop the oxygen masks compartments from up there. if i were an employee of spirit or even a passenger i would try to also email airbus (since that is the type of aicraft it was) and ask why some opened and some didn't. did they tell you it was a lost of cabin pressure??