Physicists find evidence of "negative time" in photons

Well, if this phenomenon can be reproduced and scaled, could it be exploited to induce a vehicle surface local event horizon? Sure this is uninformed dreaming, but my understanding of Relativity as it runs into asymptotes at event horizons makes this phenomenon look like it might be able to press us into a regime in which the conditions that support Relativity are no longer valid, and therefore exploitable to get around the Relativity imposed limits.