hmmn i have no idea how to help you, i havent had that problem
EDIT
After a bit of testing i have found that in order to delete a created player edited with woosahs editor you must remove the face number and set it to the number that the player was originally created.
for example if you have created 3 players, the hex file shows the face to be the number of the player, 0 = the 1st, 1 = the 2nd and 2 = the 3rd player and so on.
lets say the second player has been edited with woosahs editor to have dan carters face (face 12529, face type 0-real face) and now you want to delete the player
now if you go back into the games create player mode itll crash your game, so youll need to do a couple of things
you need to change the face type back to "1-created face"
and you need top change the face from 12529 (dan carters face) to the created players order number in this case its 1 because hes the 2nd player created (confusing i know) as of now thats impossible to do with the editor, only with a hex editor
save and then go delete him and sweet as
for some reason he will still show up in the hex editor until you create someone else
but he wont show up in woosahs editor or the ingame editor, or the game at all for that matter (hmmn im stumped)
there may be other ways of doin this but its all ive found so far
some words of advice
BACKUP BACKUP BACKUP all your files