I see no evidence that this water could have magically flooded the planet then receded proving any global flood.
Even if it could, you'd still need evidence that it did. A pond in my back yard isn't evidence of a pond in my living room. You'd need some trace of it wandering into the house and then wandering back outside.
And still yet, you need to prove the ringwoodite stored 400 miles below the Earth’s surface (that is not liquid, ice or vapor)- split from hydroxyl radical, bound into a mineral crystal, made it to the surface in liquid form. And then went back to a mineral crystal structure through 400 miles of solid rock!
My point is that it's no use even trying to prove that. It doesn't get you any closer to proving the Flood.