I called to try and place the order. The additional 50% off is online only, and their servers went down, they're trying to get it back up and running but apparently some stuff is showing from old page loads, so that's why some out of stock pairs came up and the pages don't all reflect the 50% off sale.
Just purchased tincan carbons and fast jacket lenses on the oakley site...but vault now won't do the add cart or login. Dang I was going to call also...but if 50% is online only then I will wait.