Perhaps I'm misinterpretting, but you seem to be stating that without this last patch, it isn't possible to play disconnected from the internet. Again, maybe that's not what you mean, but it is very blatantly wrong. I and many others have played with the store bought disc since launch without ever going online. And I did so only fairly recently to fix the Insightful Enchanting bug that prevented it from working. Only had an ethernet cable plugged in it for the time it took to download, and I've played it offline ever since.
Even the Steam infected PC version doesn't force online play, regardless of all the complaints about not being able to get true offline mode working. The fact is, I bought it as a present for my niece since my brother already had Call of Duty on his PC and had Steam, and I followed the directions (which I found to be fairly straightforward and simple mind you) and confirmed that it did NOT need a connection to internet by playing it without the router plugged in.
I can't speak for PS3 but I doubt it requires a connection to play when the other two platforms do not. If I'm missing something here, my apologies.