Hi lynn, ditto what the capt says.The crew would be aware of the vibration via their instruments and via the airframe if it was bad enough very quickly.
Other parameters would also indicate problems.They have comprehensive check lists to carry out in the event of non normal events.
Given the damage I think it largely shut itself down. Even so checklists must be carried out.
Pax may have seen initial sparks moments before the crew was alerted to problems by engine monitoring instruments but for the media to suggest the crew acted on alerts from pax alone is a load of nonsense imho.