On the SWTOR forums a dev posted about Origin/TOR, saying that you will NOT need Origin installed to run, play, update TOR. You will only need Origin if you want to purchase the game online as it is the sole online distributer for TOR. I would have thought the mmo would have been the 1 game that WOULD require you to have Origin to update etc, so if you dont need it to play TOR, then i cant see you needing it to play ME3, BF3, etc.
Here's the quote for those interested explaining it a little bit more:
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"No, you won't.
While Origin will be the exclusive digital retailer for Star Wars: The Old Republic (in other words, if you want to buy it online and download it, you?ll do so through Origin) that does not mean that Origin is required for you to access or play The Old Republic.
Origin is a digital storefront, and the desktop application is there to give you quick access to Origin exclusives and deals.
However, you won?t need to launch the Origin application to run The Old Republic, nor will you patch the game via Origin. Once the game is on your hard disk, you?ll be connecting to our servers to patch and launch the game, and Origin does not have to be running to do that.
To answer another question - boxed versions of the game will include the client on DVD(s)."
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And another semi-related post:
"The Origin desktop application does not need to be launched to play The Old Republic.
However, if you want to purchase and download the game digitally, you'll need to do that via Origin. As you can see if you visit Origin today, purchasing a title there doesn't require you to download the Origin desktop application. You might also notice if you look hard enough that Origin ships physical products (ie boxes) as well as digital ones.
(Yes, you'll still be able to purchase SWTOR at a local retailer.)"