The Office: On it's last leg?

So I just saw an add for this weeks episode of The Office. It's scheduled at a different time, after the Super Bowl, and features special guests and a wild plot. If this is any hint it seems like all the rumors I've been hearing about The Office having "jumped the shark" were true. I hate to imagine it but all shows have to end eventually. I just wish The Office would go out on a high note and not die a slow painful death like so many previous shows have.