Whatever reason John smiled in the face of imminent disaster will remain unknown. If he was just being stoic or had a plan, it was all made moot, by what happened next.
Ogre burst through the locker room door. He had decided he had to warn Roger right away. He felt that his friend was in immediate danger. He raced all the way here, and was pink faced and breathing hard.
He saw the magic aura rising between John and Roger. He pushed John aside to rush to his friend's aid. Then he saw the little demonic mannequin, and the glowing talisman around Roger's neck.
"Ooops!"
"A really DUMB jock," laughed the mentor.
Instantly his body seemed to dwindle getting thinner and shrinking. Wales like the ribbing of a jockstrap pouch covered his body, Roger recognized the pattern instantly, and moved closer to his bodyguard to offer some moral support. Ogre's trousers fell to the ground along with his boxers, his shirt sagged as his broad shoulders narrowed. Roger said firmly, "Ogre don't worry, we'll get you changed back," he glared at John. Then looked back in horror imagining his fate if he hadn't had his talisman. Ogre's clothing lay in a heap beneath the transforming man. He shivered. Ogre now was a nice new jockstrap floating in midair. The big ogre's face was embedded in the pouch. The jockstrap fell. Roger bent forward to catch his falling friend. The talisman swung freely and glowing brightly as he reached outward.
John edged around behind Roger. His hand shot out and he grabbed the talisman and pulled hard. He chortled,"Make that two dumb jocks! Mwahahahhaha!"