It reminds me of the remixes used for the Jungle section of POM.
His other Oops! remix was released and is similar. It's more base/drum heavy and sounds closer to music of the time.
Yea I think it's the bass slap, I thought the same. I think it was a common style for the era too.
I like the unreleased more because it sounds fresher.
I was shook when I realized it too! Love getting HQ unreleased material.