I remember Jared Allen went to a few training camps, but I don't think he stuck anywhere. I also remember Laskowski got an invite to a camp somewhere. Real intelligent guy, I met him while he was taking a tour of the SeaTech facility, and I "explained" particle image velocimetry to him and he picked up the general concept really quickly. He was a little small for the NFL though. Parker and Bynes got invites too, according to a quick google search - interesting that Bynes didn't stick anywhere. That kid caught everything!
The one guy I'm really surprised didn't stick on an NFL team was Frantz Joseph - he was a beast for the Owls, had a real nose for the ball. I guess he couldn't learn the NFL game? Who knows.
As far as I know, the only Owl ever with a chance to make the Redskins was DB Corey Small who got a tryout. I think the first guy to make a 53-man roster from FAU will be Tavious Polo. Great DB and fast!