Passengers opened the emergency exit after observing a tailpipe fire during engine start.
Presumably the PA would made
before the pax jumped up and offed...
I wonder if the very first reaction from Row Zero, to a call from Ground that there's a few flames coming out the tailpipe, is to jump on the PA and shout "Cabin Crew At Stations!" (as poor englissshhh as it is...)
What about the cabin crew telling the pax who are up and running about to sit down immediately?