You mention reading a thread about this issue on a P380, was it the one where some folks resolved it by manipulating the cocking cam with a small tool (bent paper clip)?
If not, you might want to read here (starting at post #28): http://www.kahrtalk.com/showthread.p...-screwup/page3

I suspect the cocking cam has already come back up behind the striker, but ahead of the slide end plate. The slide is not coming off the front of the pistol in this condition. To remedy that you have to move the cocking cam out of the way or pull the end plate. As you can't move the slide to the rear, let's rule out the end plate. You can try to move the cocking cam as described above or pull the frame side plate and manipulate the cam from there, but first I'd try to find out why you can't move the slide to the rear. Look inside the magwell to see if the cocking cam is catching on the striker block or if the ejector is hitting the striker. The barrel or recoil springs/guide rod might also be preventing travel.

Personally, outside a definite metal to metal feeling that prevents movement to the rear, I'd be tempted to give the slide a light smack backwards with a rubber mallet. You could also hold the slide with on overhand grip and smack the frame forward with the web of you other hand (about the 2:58 mark here: https://www.youtube.com/watch?v=jZdyPdlzEPs ). You just need travel enough to reconnect the trigger so that you can move the cocking cam.

Regards,
Greg