Watching the tests it sure looked like they imploded. Is it possible the air cooled and contracted causing the failure?
Maybe they’re vented until they’re full to prevent that? IDK
By the way, I’m modeling the Starship as my next model rocket project. I’m going to have to find the center of pressure. I haven’t used it yet but there’s a free software program that’s supposed to be able to do it.
Pretty cool.