Without looking it up, I cant say much about the swamp treat. Bleach would do exactly that, all the way to Crystal clear, and depending on how much Swamp Treat was put in, more credit may be owed to the bleach.
We aren't against putting anything in your pool that's needed, as long as you understand the effects, and potential side effects.
I give most of the credit to the bleach. But having said that, the pool made a lot of progress for the first 3-4 days, then stalled out for over a week. I was continuing to test it and bring it back to shock level 4 times per day the entire time and it got nowhere. 2 days after I added the Swamp Treat, the pool was making noticeable improvements. I do think that what I presume is higher quality chlorine helped as well. I'm not sure which of the 2 was the deciding factor in getting it over the hump, but it did.
FYI, after some quick research it looks like Swamp Treat is Sodium Bromide.