Punchy's already out - as soon as he realized Sherlock and Carlos weren't about to die, he went about the task of saving himself. Unfortunately, the only option is the elevator.

It really isn't safe to use an elevator when the fire alarm is going off, he thinks, and yet there he is. He gives Sherlock a wave, can't see where Carlos went but knows he's outside the danger zone, and manages to only collect minimal burns before the elevator doors close like a giant metal eyelid.

He'll have to find them later.