You could try assigning him as a free agent instead of WCW and see if that makes any difference. Unfortunately though the issue might be that the game will always want to include whoever holds a title, regardless of where they are assigned to. But having all of the unwanted titles on one person is still alot easier though because all you have to do is remove him from the card whenever he appears instead of having to do that for several different guys that hold them by default. Still sounds like a bit of an inconvenience but at least it's a work around.