scudbus258: Your SSC take-over theory is incorrect. It is the autothrust that can be locked out by holding the 'instinctive disconnect switches' until after the flight, nothing to do with the side stick.
The SSC indeed can be reactivated by pressing the button on the other stick in flight. The latching is there in case the other chap/chapette is slumped on the stick / side stick failure. Pressing and holding gives priority straight away.
BigFootDriver - I can assure you a good working knowledge of the airbus stick logic is unlikely to enhance any hijack scenario... Personally I would worry more about the people who are being recruited up through airlines who are currently worrying captains with regards to their various views on life and beliefs, but, ahem. help the pro diversity figures companies seem to strive for. A different story entirely.