I remember hearing this as well a while back, in fact I think I even posted a thread to see if anyone could confirm it.
I forget exactly where I heard it, I think it was on one of those Brotha Lynch DVD interviews.
Speaking of "Low-Down", does anyone know if the dude has more shit? The only other song I've heard him on was on Young Bo's album, and it was tight as fuck just like "It's Goin' Down" on Now Eat.