Someone got kicked for FLYHACK VIOLATION and then when he got back he was moving under the map at a certain speed. He couldnt stop moving. Even after suicide/reconnecting

When i went to check up on him the exact same thing happened to me and other players. It is literally game-breaking

This will be fixed in the next update 1.0.87

its NOT game breaking 
You only do it once and then you learn not to do it again
Do not teleport from any moving object in game