Dear Bob and Gerry,
I find it very unusual and coincidental that two hobbyists from opposite ends of the country have experienced OB fry in their spawns of Labidochromis sp. "hongi". I asked around and my sources also doubt that this could be. The fish was first imported to Germany long before it became available in the United States. The Germans who have worked with this fish for many years have not experienced any OB fry.
I hate to say it, but I believe that the stock you both have came from Florida. They were more than likely bred in ponds, and somewhere along the line an OB (Probably Pseudotropheus sp.) migrated into the pond. This is the only logical explanation, for OB fry showing up. Unfortunately the OB's you have spawned are a hybrid kick back.