Yeap, that's the bug with gemology. Once learned, you can't unlearn it.
Also I would like to say that even though shamans got some talents and seem like they got a major power boost, from looking druids changes it might be they who will be even more powerful. Cat's form with new changes seems just as powerful then rogue (if not even better), bear form better then warrior (thanks to severe rage drain increase in warriors, and bears get a "charge" talent, that although doesn't generate rage, can be used repeatedly in combat with 15 sec cooldown), and even the normal form good at nuking and healing.
Also I would like to say that even though shamans got some talents and seem like they got a major power boost, from looking druids changes it might be they who will be even more powerful. Cat's form with new changes seems just as powerful then rogue (if not even better), bear form better then warrior (thanks to severe rage drain increase in warriors, and bears get a "charge" talent, that although doesn't generate rage, can be used repeatedly in combat with 15 sec cooldown), and even the normal form good at nuking and healing.