Forgive me for pointing out the obvious. I realize everyone here is aware of the paradox of gravity: though it is the weakest force, it determines the structure of our universe.

Because it takes so much mass to deform space-time for a noticeable gravitational effect either

1. space-time must bend very unwillingly or

2. matter and energy must be appallingly ineffective
at affecting space-time or

3. some combination of the above.

If space-time is so reluctant to yield to the pressure exerted by matter and energy to deform it, then perhaps it is easier for space-time to resume its preferred 'flat' state than we imagine? Just how springy is space-time?

It is worth noting that an object moving through space-time leaves no detectable gravitational wake. In other words, space-time springs back to its normal undeformed state instantaneously. This implies that deforming space-time is hard, while space-time bouncing back to its preferred state is remarkably easy.

So it is certainly possible that some force - perhaps electromagnetic - could find it relatively easy to assist space-time in doing what it does so readily: return to its unbent state.

I have read the research mentioned in this thread concerning spinning superconductors mitigating the effects of gravity. I imagine almost everyone here has read the same research, and I encourage anyone to post links to such material.

An intriguing area of research, one not without promise.