Contact Thunder Beast I'm sure it's happened before.
Having said that, here is my opinion;
Ideally the best thing to do is if you had a spare piece of round stock that you could thread to the correct thread pitch, then use a jam nut to lock the brake down. The problem with just threading the suppressor on to a barrel is that you will be locking the suppressor on to the brake more. A more realistic option is to lock tight it to a barrel then heat the suppressor with a torch a bit, give it a few sharp raps with a mallet and try to loosen it that way.
I got my specwar stuck on my mount the first day I had it and a few sharp blows with a mallet got it off easy.