I reckon a bunch of VW enthusiasts in a field in Leicestershire would have got it off!, https://www.f1fanatic.net/2021/05/2...aDRRNUepDivxfnVJcU_wQElaZj9oFCve_2-8RWBokbbKw
Hammer and chisel will sort it. I did laugh when I read that Ferrari tried helping them with some kit.
It was probably so clean and perfectly machined flat it cold welded. A bit of random grease or roughing it with 100 grade enery paper on the flat surfaces would have fixed it...