When a player is hidden on a message board, it's presumably because they are a pain in the neck. So to have their name then prominently dispayed in the "Remove" list at the top of the message board is rather adding insult to injury.

A workaround is to block someone innocuous whose name is lower in the alphabet (it sorts with Z at the top for some reason) and their's will be the one visible.

But better, I reckon, would be for that Remove list to be at the foot of the message board, or, perhaps more logically, on the Blocked users pages.