I saw a diccsussion like this down at Raburesu and most said that they would slowly fall out like teeth to etc.
Which i think is what happens to its more logical plus Kouga did mention in her Q and A that they fall off like Umbilical(sp?) cord, teeth, etc.. so... imo (and also proberly what would fit to) that the ears will slowly fall to pieces bit by bit, otherwise it must be painful right?
i suspect the hearing will go first and then slowly crumble off as days go by?