Audi A6 2009 2.0 Tdi Air Filter Box removal

[borotopper]

Newbie so hello everyone and apologies if this is already covered elsewhere. Basically, trying to replace offside dipped headlight bulb. I have removed the air filter box cover, but I can't get my hand underneath to remove the bulb enclosure cover. The air filter box is mounted on an anti-vibration mount but even after removing the bolt to the bulkhead it feels like it doesn't want to move. Does the head of the rubber mount come off . This should be an easy job, am I missing something? any help welcomed  Thanks 

[RoyC]

Here's a video for 2008 A6. 

Another one.