Myself and 3 other friends were also online when this happened, Teleported up near Petrovka, everyone except one person that I saw had broken legs and was prone. Then shooting started, I died, saw a lot of other deaths too. After all this, the server was locked when I attempted to rejoin. Edit: reading a few other complaints of teleportation hacking to other players on other servers, I would think the admins may have passworded the server to protect it... but there is always the possibility they were behind it.