I've attached the Google Earth aerial to attempt a comparison. This shows the area to the right of the 9th green. While its hard to tell for sure, I'm guessing that tee box at least partially slid into the ocean and is likely no longer usable/safe. Sure seems like that would be an awesome tee box to restore and use a sea wall like many sections of the 18th to keep it there.
Edit:
After studying it further, I guess they likely wouldn't restore it as that beach is public and would likely be too much of liabilty with having people tee over it all day long.
Tis a pity!