Ways not to lock your bike

I saw someone do exactly this a few months ago next to me as we were both locking up and said "Sorry to be rude but can I show you something?" and undid the quick release and un hooked the v brake in under 10 seconds, thakfully they took it the right way and were appreciative of the impromptu demo

what are you meant to do with a stand like that tho?! unless the others are empty and you can take up several at once by putting it sideways.

we have loads of stands like that at my uni and it's so annoying cos there's no way of locking properly to them