Ha ha, yes that was funny. The rules stipulate that the "Series Stickers" which include the race number, sponsors etc must fit on the rear wing endplate.
So what one team did was remove the top plane of the rear wing, cut the endplates in half (i.e. remove the upper half), fit the sticker and fold it over. The sticker fitted, and the rules didn't say the sticker had to be un-creased or visible from one side of the car. So they ran without wings legally, whilst everyone else had to use the lowest downforce settings or something.
I don't really remember the details, or which team it was, but it made me chuckle!