Could there be a "Communication Theorem" instead of a "No-Communication Theorem" in quantum entanglement if we could measure and manipulate negative energy.

 According to the ER=EPR conjecture by Susskind and Maldacena, traversable wormholes—which are postulated to require negative energy (or a vacuum force)—might the equivalence lead to a "Communication Theorem"? 

Then could the application of negative energy in quantum entanglement bypass the conventional requirement for Bell state measurement and classical communication, which are necessary in standard Quantum Teleportation?

Do you mean that the no-communication theorem would be violated and signaling between distant factors of an entangled state would be possible?

If that were the case, I wouldn't call it a "communication theorem". It would simply be that the no-communication theorem doesn't hold.

Eg, we don't have a theorem that says 7-body systems exist.

The context of the quantum NCT I think is very different. If I remember correctly, communication back and forth through the ER bridge is not possible.

All of this is, of course, just theoretical speculation, but if I had to bet, I'd say "no, it doesn't happen".