Haha, I suppose if someone wanted to they could abuse the Jay's ability to break the game.
I wouldn't personally come up with a specific wording or ruling, because the game is meant to be open to a lot of creativity and interpretation. I would instead just have a conversation as a table if the Jay wanted to break the game, and instead ask them to try something that is still fun for them, but also doesn't ruin the experience for everyone else.
Glad you like the look of the new version, thank you for the kind words!