skipper-dog, were you able to eventually eliminate and get relief? If so, (and I certainly hope so by now!) could you share with us what you did to trigger the release?
It's unusual for this to happen with soap solution enemas, especially when you are not dehydrated, but it's quite common with plain water enemas, and especially so when dehydrated.
But despite cramping and discomfort, retained soap solution shouldn't have any lasting effects.