Keyserver doesn't honour removed signatures

[Chris Hills]

On 14/04/09 14:32, Werner Koch wrote:
> No.  The Net never forgets.  A keyservers will never remove signatures
> because signatures go into the key validation computation and thus
> removing signatures would change the validity of your key.  Signatures
> are also used for revocations.

Hypothetically, if a key is signed using another key which contains a 
jpg image of something illegal in the keyserver's location, what then? 
It would seem to me that the only option would be to remove the 
keyserver from the keyserver network.