How are they able to break street date though,
that's illegal on so many levels. ahah.
Not really, if they have recieved special instructions from SE themselves due to the special circumstances, then its more than possible for this kind of thing to happen, and its definatley not unheard of, the same has happened before with the likes of Halo 3 and even Half Life 2.
The first instance of street date breaking I remember was Streets of Rage 2's release, after the runaway success of Streets of Rage 1 they allowed it to be released a week early due to the heavy pre-ordering so its not uncommon for this sort of thing to occur at all.