It happened once before when I was two splays away from Wonder (Green and Purple (?) were unsplayed) and he was one splay away. He had his green cards splayed right and crown advantage, so I certainly wasn't using Metric System.
Then he splayed his green cards up. Now I can use Metric System: if he shares on the first one, I gain a card for sharing, cost him a upsplay, and don't use it again. If he doesn't share, I use it again to steal Wonder.