'frozen' hatch latch repair on 1999 Subaru Legacy Outback

I have a '99 hatch back and just recently the latch to open the rear hatch quit working. It feels like it's locked, but after using both the key-in-door, as well as auto locks, nothing changes. Are there any diagrams out there that can assist me in gaining access to the latch? Any advice on fixes?

Asked by for the 1999 Subaru Legacy Outback
I don't think you'll find any diagrams, you'll just have to use your head. Think like a mechanic. What I'd want to do is remove the interior trim from the inside of the car to see what's wrong.
If you need a Subie specialist, here's a directory link for you:
1 more answer
mine is very rusty - i have been able to work around it by pushing the "handle" that releases the hatch forward, hard, then turn the key to the right-you can tell if it is releasing the lock - this may take few tries. also you can get to the mechanism by removing the hatch inside panel - wd-40 helps a lot - after doing this for a few years, i'm just going to replace the thing.