"It plummeted/plunged (20,000 ft, for no apparent reason), and then is what caused the oxygen masks to drop"
The passengers later caught another flight. (ABC news)
Would most passengers seriously just catch the next flight after being in such a plummet/plunge (drop, freefall, weightlessness, negative g, drop out of the sky out of control) ?
Probably not even I would ever fly again.