Yesterday morning, I woke up to my phone at the Verizon boot screen. I pulled the battery and the SD card then replaced the battery after a few minutes. The phone sometimes will boot all the way to the home screen, and will sometimes let me enter Safe Mode, but it inevitably reboots after a few minutes at most. Usually, it doesn't even get to the home screen.
I managed to clear the app cache during one of my lucky Safe Mode sessions, but that didn't help. I tried to reboot into recovery by holding volume down and power, but that just causes another reboot.