Erin got up on the stage, and prepared to do that oh so terrifying front flip. Suddenly, she closed her eyes, sprinted and threw herself into the air. She expected to crash... but then she heard the crowd cheer. She opened her eyes and her brothers were standing, cheering louder than anyone
I'm going to ignore the actual caption and go with this instead... I think Dean arranged Sam to look like he was just sleeping. And Dean knew exactly what position Sam is usually in when he sleeps because he's Sam's big brother and he's been watching over him while he sleeps for his entire life.