I saw a theory somewhere that we were saved by Kelemvor's interference here. It was all explained through Wither's hints when talking to the cleric of specific deities and some other references. I don't quite remember now, sadly, but it was quite convincing.
It took me so long to write my post that I only saw that you mentioned this after I hit "post reply". While I am writing a post, the discussion is already a few posts ahead 😅
