Come to think of it, I don't think many of the trail sections/feature have 'official' names.
At Alafia, there is Doom and then the big, optional, ridge to the left after that section has been called No Dab Ridge. The left hand turn and drop at the first hard option on Roller Coaster has been called 'FactorE Falls' due to a wreck that occured there. That newish hard option on North Creek (a little climb then drop back into the trail), I have called the 'Panty Drop' due to a friend of mine wrecking on it, popping up showing that he was ok only to have his pants fall down because they came unbuckled during the wreck.
At Carter, the only one I can think of is the rooty step up between the two trees on Sneaky Snake which I have heard named as 'Satan's Needle'.
At Boyette, I haven't heard anything but I don't ride there that often.
At Santos, I can't think of anything specific other than 'that rock garden', 'that other rock garden', 'that one rocky downhill', etc...
If anyone has names for things, lets hear them!