I'm guessing he's talking about the 'someone moved a noodle' thing Maddy keeps saying (which is correct anyway, since she's referring to the spaghetti metaphore she used to explain the paths of futures past).
Now that we're actually talking as cxx almost always manages to achieve, what's with this series of rejuvenation procedures the MC was subject too? As far as I understood, Sister Bernadette has been (unsuccessfully) trying to steal the ring from him for near a century or even more. But we are told that some historical figures like Churchill were also Champions of the Grey One, so he should have had the ring too within this timeframe - not to mention Father Mulrooney, who also wore it just some weeks ago as Sadie points out early on. I'm a bit confused about how this whole thing works.