Thanks guys, although the it was only an idea I stole from someone else
I was in the same boat as
@Patrick2691 and couldnt for the life of me get it back in, and after 2 hours changing the thermostat was a bit frustrating! But found that solution and was pretty relieved, could believe I'd tried ramming in for 20min prior to searching for a solution. That's why the photos a bit crap as was last minute thought. Here a better diagram from VW
So if I remember correct seat the socket the same side as the above arrows and draw them back through with the bolt.