That episode was amazing, to have the first part happen so well and still get the quest finished in such style, Adam you are a storytelling Savant.
I asked this mechanics question in chat, perhaps I'm missing something (I hope I am I'm not a fan of the rules as I understand them).
What is the correct rule for moving through allies?
The sections in quest are as follows:
PHP 190 under Difficult Terrain - "The space of another creature, whether hostile or not, also counts as difficult terrain"
PHP 191 under Moving Around Other Creatures - "Remember that another creature's space is difficult terrain for you"
The section above 191 which states "You can move through a nonhostile creature's space", doesn't seem to override either of the other two sections.
I looked to see a source for a potential house change or previous question but couldn't find one, hopefully you can clarify things. I have a campaign with some tight encounters coming up so knowing one way or the other would be very helpful.