It's really only ruined as a viable saddle if it develops a ridge down the middle. Now that's talking arse hatchet. I had a leather saddle like that in my younger days. Be very careful about tightening it. Otherwise, just consider it broken in and hope for the best.

This is the achilles' heel of traditional leather saddles. In future, it would be best to put a cover on it so it doesn't get too soaked from the top, and some fresh proofide under it to repel water spray. Whenever I read Brooks threads on here or anywhere else, I always feels like the fans are understating the commitment a Brooks saddle requires from its owner. It a great saddle, and great looking too, but it does need more special attention than plastic saddles.