most clone fans have been under the impression that we weren't going to see any of the money from their buyouts anyway. right when the announcement was made that the big XII would become the new big XII - II = X it was all but officially stated that the buyout money was offered to TX and OU as a thanks for sticking around.
also, if the big ten really wanted nebraska, I don't think it's all that unlikely that they would pony up the buyout money for them to the big XII. especially if they feel that in the long run it would be worth it.