I'm pretty sure Brock did this on purpose, but FreddyJay noticed something special in the background of the most recent picture released on The Quest for Truth:
If you look behind the book, you can see a clear Eugene, a sort of clear Whit, and another female character that looks to me like Connie. (Tell me what you think in the comments!)
It's just like Brock to do something like that. The picture wasn't even really needed, so I'm sure he only took the picture to sneak some secrets out.