How to remove X5 driver side control arm/tension strut?

[chichi]

I wonder if there is a DIY that shows how to remove/replace driver-side control arm/tension strut for a 2003 X5. The passenger side was pretty easy by removing the two 20mm nut and bolt. On the driver-side the bolt was blocked by a plastic piece that look like a air duct or reservoir. Do I need to remove the front bumper to do the job?

Thanks for your help.