mike, the small hole under the lock cylinder is to release the cylinder from the housing, you were correct.
I thought the key release was close to that hole but I was off on what I remembered. That is why I went to a car and took that picture.
I keep forgetting it is there actually but it does work, I tested it on that very car, although that one was working so I had to force it to stick by putting the car in gear.
Cutie, I love to help when I can, I'll see you ladies through this one...

(I am making an assumption that a guy would not give himself a monaker like yours... sorry if I am mistaken)