If you do find someone who might be willing to do it, print out the instructions from the US forum and ask them to confirm they can do it.
There was someone in the D2 section who was also having issues getting the coolant sensor removed after removing the clip, but it seemed seized in place. I'm not a mechanic, and I don't know the consequences, but what if you removed the securing clip and then turned the engine over (not starting it). Being a pressurised system, would it be enough to force the sensor out? Apart from losing a little water, and ensuring you have something above the sensor to stop it taking flight, it's a possibility.
I don't know, so please don't try it unless someone more mechanically minded could clarify it.
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2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts
My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts
Sold!  2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II Headlights
My DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds
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