This change would come from the original credit bureau, not from FICO. Don't know why the status changed. But it's still on your reports, right?
It actually looks like a favorable change to me, although it is not going to affect your scoring either way. (FICO doesn't care under which circumstances an account was closed.)
But if your history is ever manually reviewed, it looks better for an account to be "closed by consumer" than paid/closed, which implies that the lender closed it on you.
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007