Thanks for the testing guys!
Corey,
I think the club frontier site is working fine.
What happens is that users use 3rd party hosting sites to host the pictures so that the pictures show up large, and can be intermingled between the text of the post.
As people move on and/or threads get old, people either delete their photos, or their account in that 3rd party site goes inactive, and the pictures disappear from the post.
That is probably what happened in the link you posted.
The only chance to retrieve them is to send a private message to the poster, hope they are still active, and ask them to restore the pictures.