No, the young yoga family would have kept walking as they talked, and by the time they finished discussing the woman's obesity, they'd be so far out of range the husband would've had to run after them.  Also, he basically made a speech, and there's no way the yoga family would have stood there and listened to the whole speech if they had stopped to discuss the beast. Also, DON'T GO HIKE ON TRAILS YOU CAN'T DO!  LEARN YOUR LIMITS.  You get in my way and slow me down.