@Franicia I think that CAPT Berta was directed by his boss(es) to issue that letter. He may have issued that letter rather than relieve me as CO. I spoke to my lawyers about it, and they recommended that I sign it because it was kind of a "childish" action on RCCSE's part and not worth fighting.
Prior to CAPT Berta sending the letter, he called me. We discussed the whole situation, and I told him where I heard that I had hit the terrorist. He basically said that his hands were tied. That was not a good day for me. 🙁