Ok, so I rooted with the CF Auto root and all was well. I cleared a ton of bloat off my phone and all was well, I decided I wanted to return to stock by flashing official firmware from Samsung via Odin. It's frozen at the sprint screen. DANG! I'm going to try booting to TWRP and see if I can restore a backup. But the goal is to get back to stock in order to try a couple other things. What now?