Wrong Direction

Swoosh! Bam! 

Grey, who suddenly disappeared soon appeared in front of the Wind Elementalist, he struck out a blow that was covered with blue flames. 

Crash! Bang! 

The Wind Elementalist was unable to block the attack which struck him cleanly on his chest. He was sent flying, crashing into the ground, he bounced off once before hitting a boulder almost one hundred and fifty meters away from his previous location. 

Grey was still in a punching position, with his right fist outstretched. 

The battle ceased, neither the people fighting against Grey nor the people watching could figure out what just happened. One minute Grey was barely dodging attacks, the next minute he suddenly vanished and appeared close to the Wind Elementalist. The Wind Elementalist in turn was sent flying, for over a hundred meters! 

How could that happen in the midst of such coordinated attacks from the group of four?