Initially it just shut off, with about 80% of charge left. Got home from work, looked up a few solutions and tried the "hold power button, volume down keys for 10 -15 seconds to reboot" trick. Almost worked, but the animation gets to the red orb looking thing and just stays running on that animation until I do the power button/volume down combo again.... same thing.
So far I've let it sit on that animation for a good 45 minutes.
Tried the reboot power/volume down trick 6 or 7 times.
Also tried to plug it into the PC to see if that would trigger something.