Same voice again today. Closed captioning just said "woman"; funnily, it said "Jim Thornton" last week!
They've been really doing weird things with the announcers. Charlie is left in on any episode he did originally, but if the episode originally had another substitute, he's dubbed over with Jim. Also, except for last week, the Friday episode has been from a different week than the Monday-Thursday episodes. I can only think of one other time that they reran anything out of order.
I think Jim did the SPIN IDs on the first week of reruns (September 13), but I'm not 100% certain. Seems like I would've noticed if it were someone else.