towing

Had my honda civic towed but I managed to catch the bastard and show him my parking sticker before he made off with it. Getting into the car to get the damn parking sticker I noticed that the parking brake was released. How does the tow guy bring it down without getting into the car or does he have a master key?
Should I be worried about the tow truck screwing something under the car when it was moved? Like the shocks or transmission.

Also if anyone is knowledgeable on towing could you give me a rundown of what can go wrong and what to look for the next time my car is towed off so I can check the areas that need checking....


Thanx for the info in advance.