It's not purely visual. One of my lowbie chars who hadn't picked up crew skills now can't pick up a third, because the "ghost" skill is taking up a slot - yet it can't be used and it can't be untrained (error: undefined skill). Logging out didn't help this. Hoping a client restart (or waiting) might. As an altoholic, I'm concerned that any new chars I make will also be affected by this and unable to pick up the actual third crew skill they really want. :/