Welp, I finally sent my phone in today to Samsung.
About 3 months ago I had this cracked screen incident - A lot of you are claiming it isn't real, but it definitely happened to me. Sitting in a movie theater, I felt my phone get very warm in my pocket. Went home and as I was getting ready for bed, noticed the crack. No drops, no hits, nothing physical done to the phone.
Any ways, I dealt with it for 3 months and then this past weekend while I was bowling I felt the phone get warm again. I do use a 3rd party battery (Anker 6400) and when I went to turn on the phone it just wouldn't. Couldn't get it to boot in any recovery mode... so off to Samsung it was to see if they can resurrect it under warranty. Not sure they will do anything about the glass, but thought I would share my story here.