Atlan had to go back to the group as soon as possible before they went and fetched him. With an explosion like that, they would no doubt imagine that he was getting attacked by a rogue Canzer.
When he was back, he was met with relieved expressions.
"Oh thank the Gods! We heard an explosion out there and thought something happened to you."
"I checked it out and it turned out the whole building was burning!" said the Scout.
Ninth walked over to Atlan. "It's best if you don't stray away from us from now on. Put on your suit and take a rest. We'll be setting off tomorrow."
Thankfully, nobody questioned too much about where the explosion came from. They simply put it off as some mysterious phenomenon from the Remedium. It helped that Atlan used his Allure mutation to make sure that they didn't ask too many questions.