Baboon Spider

It is widely accepted that the baboon spider female only digs one hole in her life. once she has shed her first skin she looses the "teeth" on her mandibles that enable her to dig a hole. Well, we have just had a new immigrant into the camp. A large female has recently dug a new hole where there was not one before. Is this an exception to the rule or does the rule book need to be rewritten? There are so many things to learn and so little time to learn them in. Our only hope is to do as much as we can to enlarge our knowledge base not only by reading but also by looking and seeing the action that is always going on around us. If anyone has any more info on this subject, I want to know.