You’re On Your Own
The lesson to be learned here is that you absolutely do not want to mess with bus drivers. This guy decided to take up two bus parking spots, and the drivers united together in order to teach him a lesson. He was completely blocked in without a chance of leaving without asking the bus drivers very nicely.
Making Assumptions
As far as parking revenge goes, this approach is quite kind. The person who left this card behind is giving the terrible parker the benefit of the doubt, assuming that something crazy must have been going on for such a terrible parking job to be justified.