Bullshit.
It is impossible to transmit every single order by Mutum Sigillum to Mtgox in Japan on behalf of their clients, because wire costs would kill the buisness. The two companies were merly reducing funds imbalance from time to time - it cannot be called transmitting money on behalf of their clients.
But this isn't really a defense. That's what all money transmitters do. It's the
reason that money transmitters are regulated.