#97983, Tales of the Creatures From Another Forbidden Planet has a mission that references Them!.
I didn't write it myself, but it's got exactly what you're looking for.
Aww. If only my arc had an office-to-cave map.
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Weatherby_Goode - "Heck, Carrion Creepers negates the knockdown from Carrion Creepers."
Arc #1665, "Ant Attack"
The arc does not have any Them! references (or at least it didn't when I reviewed it) but it is about ant-men attacking Paragon City.
Current Blog Post: "Why I am an Atheist..."
"And I say now these kittens, they do not get trained/As we did in the days when Victoria reigned!" -- T. S. Eliot, "Gus, the Theatre Cat"
Seriously super-powered killer ants please on Office to Cave maps now!