Thank you to @URBANKAMI for bringing a solution to my attention! The thread with more information can be found here: http://forum.xda-developers.com/showpost.php?p=65919400&postcount=707
FOLLOW THE DIRECTIONS IN THE GUIDE AT YOUR OWN RISK. I HAVE NOT USED THE GUIDE, NOR AM I RESPONSIBLE IF IT BRICKS YOUR PHONE (well, makes your phone brickier lol).
This is a fairly common issue with the LG G4, supposedly with models manufactured before September. The phone will randomly power off and reboot itself into a never-ending loop. LG has not formally announced a problem.
The reddit thread that this video was posted to can be found here: https://www.reddit.com/r/lgg4/comment...