I do not know him. this is the first and last gun I have had him work on. I called a local class 3 dealer and asked who they suggested, thats how i got his number.
All I can say is those are some pretty ugly looking threads on the barrel. How much was caused by blowing it off and how much was beforehand is hard to tell. Did you ever have it off before you BLEW it off?
If I were the smith I'd be extremely apologetic and hope for a chance to fix the issue myself for both of our sakes. I would want to know what happend and know how to fix it so it never happens again! If you were not comfortable with me doing any more work for you I would offer to pay for the smith of your choice to fix it. Any gunsmith or any business for that matter can and will make mistakes. The thing that separates them is how they handle it. Now in this case this is a mistake that just can't happen. It's unacceptable to put a customer at risk. Whether or not you give him the chance to make it right or not is up to you but either way he is responsible.