I'm not really familiar with Origin (I have an account, but sadly, if this is Origin-only, I won't be playing it), but surely there is an offline mode like with Steam? So, you would have to log into Origin, and you'd require the network connection when you set it to offline, but then you're good? That's how it used to work with Steam, although now you don't even need the network connection when you set it to offline mode.

Oh, and by the way, you don't have to play multiplayer.