There are many people who think they’ve seen the name LaFleur in earlier episodes. There’s no LaFleur in the Dharma mass grave tho (seen in The Man Behind the Curtain and Cabin Fever), and still no one knows where they could have seen the name before.
I found it interesting, so I googled ‘lafleur mass grave’. I ended up on an Indiana Jones Wiki page about a certain character named….LaFleur.
In a certain Indiana Jones episode there’s a Captain LaFleur who is the doctor of an expedition team under the leadership of Indiana Jones. According to the wikipage some members of the expedition get sick and eventually LaFleur himself dies from the disease. And guess what, he was buried in a mass grave in the jungle!
I don’t know if Lindelof and Cuse are fans of Indiana Jones. I just found it a funny coincidence. I do think tho that it’s a bit too far-fetched to say that LaFleur, or Sawyer, is going to end up in the mass grave.