All it takes is to get a couple more justices like Thomas and Scalia on the court, and yes, it will be overturned, right before your eyes. All they have to do is snap their fingers, and it's done. What's to stop them?
Politics may prevent these types of justices from getting to the court (a lot hangs on Specter's defeat in November), but the "stare decisis principle" won't.
Ahh, so this is okay with you if it is something YOU support, eh?
No wonder it is so easy, even today, for dictators to take and hold power.