DC-ATE:
Well, there just might be a time when those computer limitations NEED to be exceeded. If the airplane can't handle it, then there might just be something wrong with the design.
There's a video doing the rounds of YouTube where Bruce Dickinson (of Iron Maiden fame, and Astraeus pilot) takes the A320 for a "test drive". One thing you realise very quickly from watching the video that you won't get from reading the numbers is that the A320 is actually capable of getting and staying in some pretty extreme attitudes without exceeding the airframe's tolerances - and the computer helps it stay there.
It's a *massive* misconception that the A320 FBW system is there to "tell the pilot what to do" or "stop the pilot 's natural ability to command". The A320 FBW will do *exactly* what the pilot tells it, and stay there as long as it is possible to maintain the attitude commanded.
If you think you'll need more than 67 degrees of roll to get out of a situation in an airliner I'd be as concerned as to your abilities as you are about the A320's!