Just to defend OP's honour slightly...
It has been well known for several decades that a C152 can be "steered" crudely in the air by opening a door in flight. Now I don't know who was the first to do it, and I'm not in the habit of opening doors in flight unless the flight manual tells me to. But in the case of this particular aircraft, it does not lead to disaster. Really.
Cheers,
O8