The message alignment on the board was actually changed from the time before Tyler went into the wormhole and after he came back. Basically, the information was the same, the information was just rewritten.
Vaughn: Josie? Surprised to see you. I thought you'd be on your date with Tyler by now.
(Tyler as Corrine comes up to Vaughn)
Tyler as Corrine: Dude!
Stew: What did you just call him?
Vaughn: (To Tyler/Corrine) I don't care, Josie can date who ever she wants.
Stew: That's gotta hurt.
Lucas: We're doomed!
Professor Z: Let's not be overly dramatic.
Professor Z: (To Marshall, Lucas, Corrine and Josie) Is it really a secret when more than one person knows?
Josie: (To Lucas) You based your gravity sensor on what you learned from a science fiction movie?
Camouflage is the first episode to actually verify the exact date of the Pearadyne explosion - October 4 1987.
Lucas mentions Josie helped him with the gravity sensor
Janitor's secret message: "The face of a friend is their foe. A secret is discovered. One leaves."
Principal Durst drives a Volvo.
Lucas is the only member of the science club that Tyler dosen't pretend to be using the new morphing ability. Although we never see Tyler pretend to be Marshall, Corrine says that he was asking her a bunch of weird questions about the wormhole, which Marshall repiles that Durst sent him for supplies and he just returned from the errand.