Help From Another Person
The only thing the flight attendants were able to do was to go ask the captain for help. After all, he is in charge of everything and he might know a solution to the problem. When they explained to him, he was equally choked as Lorraine at the beginning.
The only good thing is that he knew that these things happened before and he knew that solution was possible. It is not an easy one and the whole plane would be in danger, but they must do it.