There could be a number of reasons why the bank is doing this. What is most likely is that the bank is currently overwhelmed with the number of properties they have taken back. Each property that is bank owned requires manpower to manage, paying utilities, property taxes, making sure the property is maintained, and coordinating the upkeep on it, etc. My assumption is that the bank feels that right now it is better off letting someone live in it for free, and maintain it, than to have to hire and train additional staff, then foreclose, then have to manage another property. The bank hasn't 'walked away' from the property, trust me, they are keenly aware that the loan is not being repayed. I would imagine once they have the capacity to handle the additional property they will foreclose. This is something that is happening more in the harder hit areas, your friend is not the exception. Eventually the bank will foreclose and he will have to leave.
AC