I was using the latest Safestrap, v3.72, and ran across a bootloop. It happened when I was in SS recovery and went to Reboot and accidentally pressed Recovery instead of System. After that my phone began rebooting into the Recovery. That blue message saying "Recovery Booting..." appeared in the top left corner, but after a few seconds I felt some haptic feedback and the phone rebooted, only to display the blue message again. I took out the battery and booted up the phone, but the blue message persisted. I figured that the only way out would be to boot into download mode and use Odin, so I then tried to boot into download mode (power, home, and volume down keys), but it only rebooted with the blue message again. I pulled the battery out and waited. After a few tense minutes, I inserted the battery and instead of powering up the phone normally I tried to boot into download mode and it worked. I'm currently waiting for the MJE stock tar to finish downloading. I'm sure I'll be able to Odin my way back.