Overnight someone stamped on my wheels, hard enough also to bend a pretty substantial rear rack. (Not a great welcome to Copenhagen, my lights were stolen last week...) Neither wheel would turn more than 1/4 turn before jamming against the mudguards.
I laid each on a parking bay's "L" corner, and gently stood on them, which has made them true enough that they spin freely in the frame.
The disc brake pads are fine, and the frame and dérailleur look undamaged.
Is it realistic to true wheels after damage like this? I'm guessing it's beyond the skill of someone new to wheel repair.