Of course Flash would be the optimistic one. I find it funny that PP brings out tons of pent up drama in everyone except Flash, who just becomes slightly more sarcastic than usual.
I also appreciated how the animated episode went unresolved. Some other cartoons would have a group hug to make everything all better again, but it makes more sense that lost trust would take more time to rebuild.
(Even though Secret Society came first, I can't help but think of the Spongebob Movie, where Plankton uses mind control to enslave Bikini Bottom when I hear of Grodd's plan.)