Well, guys, thanks for your responses and it seems my question wasn't all together crazy.
I just figured it would grind a bit of the pellet into either powder or dust and that would get in the threads and then the mess would be enough to rinse it anyway. I have cleaned it twice with water through the barrel and the 777 comes out easy enough.
I actually thought it would go something like this: extractor is already out, so back out the breech plug slowly and shake the pellets out, then use the ramrod to push the saboted bullet on out through the breech end, getting all the debis into the threads and chamber breakover area.
Had not yet convinced myself it was worth doing but am excited to learn from your experiences. I guess there is always the traditional choice of using a bullet puller and straining it out the barrel, then the pellets would be intact but a dollar bullet/sabot ruined.
Still sounds like the best choice is to shoot it, waste the cost of the shot, clean it and call it done.
If anyone else has a better idea, I am all ears!
Thanks again,
Mike