The gun is now junk, and you should send it to me immediately, and I will dispose of it :grin:
Sadly... Without seeing how it's stripped, and some other details, it's hard to say what the options are...
If you don't possess some good mechanical skills, and a variety of tools to accomplish the task, you may want to send it off to a pro...
You may be able to save the grip panel, you may not, depends on the material, and how it's frozen.
You may need to use a grinder or drill to remove the head, and use a bushing tool or stud removing tool to remove the remains.
Just hard to say what the best course is without seeing it.
If you have ANY doubts of possibly inflicting damage, send it out... It'll cost you less in the long run :wink:
Good Luck...