So.. I did a backup and a hard reset, and it got a little better. But TWRP is still there. So, I made the mistake of choosing format, which I'm guessing wiped all including the current image, and now I can only get to the LG screen, with the notification light up top flashing blue to green and back again.
There are several similar options for re-imaging the device back to stock, but I'm not sure which will work for me. I'm not sure holding the up or down arrows, power button, and plugging in simultaneously, will put me into recovery mode and let me install a stock image.
Is there a magic bullet, like there was for the Galaxy Nexus? Install an App on the PC, plug in the phone, push a button and it just goes?
I'm dead in the water right now, so some direction would be appreciated. Unfortunately, I can't try all the variations to see which works. I'm hoping I gave enough info to go on.