Canning is a good option if you have the means to properly pressure cooker can the ground up pods. It's more work than freezing, but if your freezer is getting full, canning is another option.
Do not boiling water bath plain chiles, only pressure cooker plain chiles. If you mix the ground chiles with enough vinegar, you can boiling water bath, but you should use an approved vinegar/chile recipe from an extension service or Ball recipes.
This would be plausible considering I would have to hit the proper PH. I understand I would have to continue to lower the PH as the volume of sauce increases (adding ingredients). The problem I see with using a approved recipe is finding one for the particular pods I am using. I would imagine Ball does not have a recipe for water bath canning Trinidad Scorpion puree.