His team didn't really say how it was happening but after about 10 minutes of gameplay, and what I assume to be HotD abuse, the entire game went down to about 1FPS because a chen in the game had managed to summon about 100 neutral creeps, somehow. I think it has something to do with how holy persuasion is modified.

absolutely needs to be fixed as soon as humanly possible; there's no way to stop it other than having a BF riki in the game, or an ember, because he just sits them in fountain and they insta-regen because of how spawn regen works, if you try to attack them normally. game becomes completely unplayable.