There is a 2nd possibility mentioned in the TSB that suggests lubrication.
it is described as such:
Bulletin No.: 06-02-32-007G
Date: April 05, 2010
Subject: Clunk, Knock or Rattle Noise From Front of Vehicle While Driving or Turning Over Bumps at Low Speeds (Diagnose Noise and Perform Outlined Repair)ce between the clamp and the steering gear input shaft. The clamp is beveled and if forced down on the input shaft too hard, it may cause a loose fit with the intermediate shaft to input shaft joint.