Liquidsquid I wonder if when the pond is at it's fullest and just starting to drop so you know things are flowing out, then treat it again with soilfloc. I would think if you could get it to seal up enough to keep it higher than the trouble area that the pressure would keep the flow going out instead of in. Also maybe it would be worth trying to pump a little more water out while it's at the level that it holds steady, to see if it comes back up on it's own or not, so you'll know for sure if it flows both ways. Maybe you're just getting below the troubled areas?
