Rear washer pipe, 2008 C5 Tourer

[tugman]

Hi All,
Does anyone know how to get at the rear washer jet on the C5 Tourer 2008. I have removed the two screws at each side but the spoiler like fitting at the top of the rear door still remains firm. I suspect I have to remove the plastic trim but I scared of breaking it as it seems a little flimsy.
I need to get to the jet because I thingkthe pipe has come off. When I operate the rear washer, water just gushes down the side gutters to the ground.

Thanks

Tugman