In the episode, "Wrong Side of the Tracks," which aired today (9/27) on ABC Family, did anyone notice a goof?

When Cory was talking to Shawn in the hallway outside the girls room, the sign in the background said "SEX ED". Then, on the next shot, the sign says "SEX, ED?", complete with the comma and question mark. There was something unreadable above the sign in smaller print. When the camera switched angles, it was gone. That's the first real quirk I've ever noticed. It seems like someone wanted to have a little fun that day. On the next episode, the sign was replaced with something different.

Did anyone else notice this?

Also, what happened to the orginal Harley? I don't like the new Harley as much.

The original Harley came back when he and Grif had the showdown and Frankie quit the gang. Then, I think that he came back for the last episode.