Hello everyone. Firstly, I'd like to apologize if ' be up the creek ' looks very informal.

Secondly and lastly, I'd like to know the difference between up for grabs and up the creek. I've already looked up their meanings on the dictionary. Merriam Webster;

up for grabs : available for anyone to try to get

up the creek informal : in a very difficult situation that you cannot get out of

However in the following when Carl Sagan says 'then we're up for grabs', I don't think he means what Merriam-Webster says for up for grabs.

( 0:35-0:40)

Would you please help?
That part of the interview with Carl Sagan was cut from the end.


...then we are up for grabs | cut | by the next charlatan, political or religious who comes ambling along...
Oh, how could I have forgotten to check if it was cut? Emotion: sad Thanks, AlpheccaStars!