I mean that's the kind of image search that anyone could put into google. Its like "large boobs". Obviously no-one wants to go back and truly investigate the context of the photo, and I only glanced at it briefly, but if it's coming up on google search the most likely answer is that it's some kind of medical picture that's made it's way on to search.
If Drayton had purposefully being trying to share and promote CP, why would he do it here on Online Arsenal of all places where he has no idea how it would be received? It's not like he was cold as ice, remorseless about it either.
Seems fairly clear to me that he was just trying to be funny and find a picture of a vagina to put in here (The CUNT List) and it all ended up going terribly wrong.
Now, putting an NSFW picture in a non-NSFW thread with no warning - now that's a stupid thing to do, and something no-one can really defend him for.