This would be pretty useful.
Currently, you can do an HTTP DELETE to http://:40180/board/BOARD_NAME/objects/OBJECT_ID
If you open the developer tools in Firefox or Chrome, go to the network tab, and drag the avatar you'd like to delete, you will see a PUT request. Doing a DELETE request for that same URL will delete the avatar.
+1 on the little X button.
I'd prefer to have a bucket I drop dead avatars into rather than putting a button on the avatar.
Fixed with a little X button. Available after a 3 second hover on the avatar