If Richie tells Gustave about the idol, does it then become in Gustave's best interest to secretly vote Madame?
3-1-1, 3 is cancelled. In the revote Gustave and Oracle can send out Madame and then just have to beat Richie in the final challenge.
Potential hiccups being if Madame's jury threat level isn't significantly higher than Suzy's but it does seem to be, and if Suzy tries to keep Richie at f4 sending it to firemaking.