Okay Mobius, I had planned on coming back and reading this today. I'm awake, full of food and in my right mind.
The SSGT is an idiot and speaking of disgrace, perhaps he needs to return to Lackland for some refresher training. His attitude alone suggests that he knows little of his job and much of his ego. Individuals like this embarrass me and I'm not even in the same branch. Apparently this base upon which you are stationed has lower standards for it's MPs to follow. I have worked withe some really unique individuals as an MA in the Navy but even some of our least cooperative aren't that bad.
I wish you the best with this. I think you are in the right to do appeal this as such. The SSgt was/is wrong and needs to have his knowledge of the law as well as his attitude corrected. That is an excellent write up.