This happened two years ago during the pandemic. This happened in Brussels so the orgy itself was totally legal. The police only intervened because they were breaking lockdown rules during the pandemic - He tried to escape through the window, naked, but fell down and was arrested, still naked - One of the other men present told the press "The police asked us for our ID but how could we comply, we weren't even wearing a thong"
iirc he also had some drugs on him.
also, he works for a deeply and openly homophobic party in a deeply homophobic country. so yeah, the hilarious escape attempt makes some sense.