What does not go away? System Volume Information? Windows creates this folder on any drive. Ignore it. Everything else should be gone after formating.
Your card showed weird behavior. Before relying on it, you should do a full test with h2testw.
But wait... what? You got a real electric shock when touching the card? I took "shock" metaphorical. Seriously you should replace that thing. If the memory chip got a shock, too it is dubious and cannot be trusted.
If you have all your files (minus the not good NAND.bin) you do not need to repeat anything except the NAND-backup. The parts with the clock and CTRNAND Luma 3DS are not needed in any case - this is not on the SD.
Your card showed weird behavior. Before relying on it, you should do a full test with h2testw.
But wait... what? You got a real electric shock when touching the card? I took "shock" metaphorical. Seriously you should replace that thing. If the memory chip got a shock, too it is dubious and cannot be trusted.
If you have all your files (minus the not good NAND.bin) you do not need to repeat anything except the NAND-backup. The parts with the clock and CTRNAND Luma 3DS are not needed in any case - this is not on the SD.