If you check out the webcam pic that Beast1979 put up of the hammerhead, you can see that the 3rd hill drop doesn't quite reach the bottom to the ground. So that would make the coaster able to still do the hammerhead at that same height as the 3rd hill. Because it doesn't need anymore speed to reach that hammerhead turn. But as you come out of the hammerhead, the track will reach the ground because it's gotta get good air time for the 4th hill.
Get what I'm saying??