I seriously doubt that you can fix that leak without completely removing the pan - you CAN'T just drop the front of the pan without breaking the "rest" of the seal, and you'll just make the leak worse.
Now - I don't understand the comment on not using a gasket because of some passage - are you talking about the oil pan? As far as I know Suzuki has never used a pan gasket on any of their engines, I assumed a 16v 1.6 because of the reference to the crank position sensor at the front of the pan, and 'trackick" - if that is correct, as far as I'm aware, there are no passages on that pan that need to be left open.
Question - are you sure it's the pan gasket that is leaking - if the oil is coming from the crank sensor area it could just as easily be the cam or crank seal, and the oil running down behind the timing cover and out the crank sensor hole.