As you are probably aware by now, the game comes with spyware that is sneakily embedded in the required Origin software. If you were not aware of this before installing the game, all your data now belongs to EA. While you are playing the game, the Origin software will scan all your connected HDD sending any interesting info to EA.
This is one way to protect your data from this Origin spyware. It will take some time and probably cost some ££ to setup. But the end result is you will be able to play the game and know your data is safe.
First task is to encrypt all your existing hard disk drives using whole disk encryption software like Bestcrypt, Truecrypt or PGP (this is standard good practice anyway to protect your data). Then temporarily unplug your encrypted drives. Add in another spare drive and install Win7 on it. Install the game on this drive. Reconnect your other drives and move the new game drive onto a spare sata or esata port. To boot from this game drive, press the F8 key as soon as the machine powers on. Select the drive from the boot menu that appears. It will then boot.
You now have a sandboxed bootable game drive. This game drive will not be able to read any of your other drives as they will remain encrypted. When you are not playing a game, you can just power the machine on normally and it will boot from your first boot drive, after you have entered the passphrase for the whole disk encryption.
If you have not used whole disk encryption software before it is easy to protect all of the drives in your system. You only need to enter the passphrase once at boot time, then windows will load normally. It does not matter if you have one drive or six drives. They can all be protected and mounted by the same passphrase at the same time. While using the machine you will never know it was encrypted. When you power off your machine, you know your data is always safe.
If you know of other ways to protect your data from Origin and still play the game, please share.