When you combine time cube theory with electric universe theory you get a cubic universe plus an electric clock. The cubic universe is flat (in the cosmological sense), so if the two underlying theories are correct then the universe diverges from flatness by the amount of one electric clock.
However, pedantically speaking, that's "plus one electric clock per universe". So in the case of a multiverse, the theorem only indicates the average. But with judicious application of the Central Limit Theorem, the Pauli Exclusion Principle, the Heisenberg Uncertainty Principle, and a line of reasoning left as an exercise for the reader, we can confidently conclude the universe is probably approximately flat, for definitions of "confidently", "conclude", "the universe", "is", "probably", "approximately", "flat", and "definitions" which remain to be derived from first principles.
Read more about it on my blog, Starts with a Bump on the Head, which, as you may have guessed from the title, is written in atrophic dactylic tetrameter, like all good cosmological monographs and comic books.