User blog comment:FairyRaven/Fairy Tail Chapter 369: The Place Prayers Reach, Review and Commentary/@comment-3424593-20140131121203/@comment-7418318-20140131122409

Since we didn't see any of his surroundings, he might have regained his self-control and decided to walk out the backdoor and somewhere outside the city where he'll blow himself up for what he almost did. And the reason he's so sorry towards Lisanna is, because in doing so he thinks he's sacrificing Lisanna to save the rest of the guild, by taking away the reason why the Demons spared Lisanna's life so far.