What a bummer! How weird! Oh ,I totally feel for you. I am wracking my brain trying to think of what happened. Well, for starters we don't know if the flush was successful until you have a BM. So it's still possible. Are you sure you used a total of 4 Tablespoons of the ES? You might want to give yourself an enema or colema or do a salt water flush. That stuff has gotta come out! No, I don't think that eating the grapefruit would stall things that much. Keep us posted and don't give up!