I need some help.

My trunk won't open. I have read all the threads on this topic, but nothing seemed to help me.

What I am guessing happened -

For what ever reason I think that I locked the trunk with my Key and not locked the car doors. -- many many months ago.

Now I cannot open or unlock the trunk with the key, although the doors all work properly - and I can hear the lock on the truck "going click" when I lock and unlock the doors.

Any thoughts on how to open the truck?

FYI right now I have the back deck off the car and can see into the trunk, but I still don't see any way to open it from the inside.

'81 300SD - 275k KM