Temple.. help

You can do it without a sac chamber. I just did it recently when my temple destabilized.

1. Go down with an armoury
2. right with an alch lab
3. up thaumaturge
4. up alch lab
5. right thaumaturge
6. right alch lab
7. down thaumaturge

You can place the corruption chamber once you have the thaumaturge in 5 placed, and let the alch lab in 4 destabilize. You can let 5 and 6 destabilize once you have 7 placed. And you can let 3 destabilize once you have a thaumaturge placed below the corruption chamber.

Follow this exact gif, it'll show you how to lock without any sac chambers left.
https://imgur.com/I6xYa1L

LLYD's video shows every step:

https://www.youtube.com/watch?v=qYON7PJ2enY

how are people placing spymasters just one room apart? my chain won't let me place another spymaster right after, I have to go spy -> gar -> arm -> gar -> spy

I did the same, LLYD could've said don't level up your sac chamber 😂 anyways it's not as hard to finish as it was to get where you currently are

As others have noted, you’re fine. Building around with the alch/thaumaturge chain is easy and you only have to do it twice.