I see it a lot, usually from rookies overtightening the drain plug every oil change. You can only do that so many times before all the threads pull out.
The spec is 29 ft-lb, but I don't even know what I tighten them to.
I do it by FEEL.
I use a NEW sealing washer (OE) that is made of soft aluminum, and I only tighten the plug until the washer starts to crush. Probably about 60 degrees once the plug makes contact and stops turning with your fingers. (If I had to, I could reuse the washer 3-6 times.)
(On my own cars I tend to use a rubber lined washer or a drainplug with a rubber gasket. That way I only need to tighten it enough that it won't FALL out. The rubber gasket does the sealing without a bunch of stress on the threads.)
IDK if your oil pan is steel or aluminum. (I guess aluminum)
Easiest and cheapest option is a rubber drainplug plug insert (we call them butt plugs at work, and there are several cars that have them). http://www.youtube.com/watch?v=cdAvBAJaBwQ
This is like what is in the video:
Here's another type I see that is probably a little more secure:
Whichever one fits will work for quite a while.
Next option might be the oversized plug IF the casting is thick enough to support it.
A GOOD dealer may have invested in the time-sert tool for repairing yours, and the price would probably be about half of what a new pan would cost, or half of what the tool would cost. Call around and ask. (Note: the dealer I work at does NOT have this tool!)
Realize that the proper repair is a new oil pan, about $210 for the part here if I picked the right car: http://www.hondaautomotiveparts.com/...LOCK+-+OIL+PAN
And don't tighten the drainplugs so tight next time.