Thank you Seven of Nine and rallyecom
It seemed easy enough, but then I got the bad idea of testing the connection without reassembling the plug and that left the europlug stuck in the S-Plug since it will sit much deeper this way and the connecting surfaces edges somehow is locked by the copper clamps...
So don’t do it like that Limeliz
I'll see if i'll cut the cord and crush the europlug with a pair of bolt cutters or something to save the S-Plug.