I was trying to find a specific spot on the video, but couldn't recognize anything in my bounce around attempt. There was a fun spot just down from a switchback that wasn't too far before the bridge into Rubicon springs
It sounds like your thinking of big sluice? That is on part II around 2:14:00 which is where we met Sky and his crew from Oregon coming up the opposite direction and had to shuffle around each other. Always fun to meet a legend on the trail.