Yea, badly damaged in parts. They are hardy corals, but do seem to require high current (better said, water movement, as they come from areas washed through tidal action, not just current), but only medium light. You may want to consider fragging this one and trying it in different areas. If they are given the chance, they will develope a form that is suited to the exposure, much like many Montiporas do. If you do decide to frag, then wait a week or two for it to regain some condition.
All large polyped corals, such as Turbinaria, are best offered artemia or similar on occaision.
Best of luck,