Unhappy [Q] Rezound internal SDCard unable to mount, partition, or wipe/format

This is driving me nuts... Here's my story.

Rooted Rezound, running Tachyon Rom.
One morning (today) phone would just no longer boot. Can boot into TWRP v2.7.1.1 recovery. Can flash recoveries, no problem.

But the internal SD Card shows 0 for size.

So I can't flash a new ROM, can't run the current one any longer. Can't do anything but flash recoveries.
I'm S-ON, so no idea how I can get utilize RUU's.

Any ideas? It's my only phone right now. I'm desperate.

HTC Rezound
TWRP v2.7.1.1
HBOOT: 2.28.000
RADIO: 2.23.10.0123r / 2.23.10.0124r
S-ON