Cure? Keep the metals in a salt and oxygen free environment Not likely.
Liberal application of anti-seize is the only prevention practical, and it doesn't always work.
Try a 50-50 mix of acetone and automatic transmission fluid as a penetrant. IBNFSHN posted a link a while back showing it as the best at loosening rusty steel. Maybe it will work on aluminum.
A few good, solid smacks to the base with a hammer might free things if you can do it without damaging anything else.
Heating the base or pouring liquid nitrogen on the holder might help as well.
Good luck!