In reply to Gary Latter:
The state it was in led me not to trust it; if I don't trust it, I won't leave dodgy tat there for others to use or to become another bit of crag litter. I didn't have a spare bit of rope to replace it and, even if I had, I wouldn't have done so, as there is a new, better anchor a short way back and directly above where the old one was.
I could have left the anchor ring lying there, but then there would have been the chance of if being lost or taken by someone who wouldn't make an effort to get it back to whoever looks after the crag (and who has done an excellent job; the anchors further back and above Torridonian etc. are much appreciated).