After viewing the replay of hugging, I came to a conclusion that steff esps.
The first round was the most obvious, especially when he rushed to zzzzzz12 at the end of the round. He looked through the walls, his team mate was away from him so he decided to rush and to kill him.
Screenshot of the part:
http://puu.sh/bmKlH/d998581a91.jpg
There were some parts that steff looked suspicious, I say that the user is esping.