I did a similar thing about a year and a half ago. I didn't use a torque wrench, just a normal 6" or whatever ratchet. I wanted to make sure it was good and tight, and ended up stripping the pan. It didn't crack, though.
I tried using a +1 bolt for a while, which also didn't crack the pan, but it still leaked.
Fortunately my cousin is mechanically savvy, so he helped me change it. The pan cost me about $100.
I actually just changed my oil a couple weeks ago, and the drain plug is seeping a tiny bit of oil. It hasn't dripped where it's parked, but when I put a paper towel to the bottom if it, a little bit of oil shows.
I haven't researched it just yet, but it might be that I used a copper crush washer and that doesn't crush easily enough? The one I removed was silver color...aluminum, I suppose? It actually got very tight very suddenly when it got down to the base. I learned my lesson--I'm not forcing it tight. Since it's not really leakign, I'm not in a huge hurry to fix it. Unless I see it drops, I might actually wait until my next change and just figure out the right washer to use...