The weresheep idea is now for a long time on the table and started somewhere in the kickstarter I think. I hav eno idea what and where that idea is going but I think they plan to put it as some more or less 'hidden' running gag into the game.
The crazy mini-mini developer dungeon/cave was just a single crazy idea as an insider gag for the kickstarter people to have a more eyes-on in-game experience. I suggested a code for that cave so that nobody stumbles over it by accident until they want to to not disturb the otherwise serious atmosphere of the game.
The people which didn't followed the kickstarter would probably not get the jokes suggested for the tiny cave. But the makers could stillset themself a small memento in the game like a hidden signature and show off a bit with their editor
About the unknown weresheep plot...
Who knows? Maybe the dubious weresheep have even a forgotten, hidden temple where they convert sheeps?
Planet of the Sheeps, baby
