Hey Firebird-
I agree with WendyDavid: the 3rd person thing is a way to disconnect from emotions that are too strong to deal with. He doesn't want to be the "destroyer" because it causes him to feel shame, and doesn't see a choice, so writing it as someone else avoids that a little. A little credit for honesty though, as convoluted as it is.
I had instant anxiety when I saw this msg. Have not responded. Will not respond. But seriously, what the heck?
That's all you need to know really: reading messages from him equals anxiety. We have a desire to retain a connection with someone we are or were emotionally enmeshed with and connected to, although these relationships are unstable enough, and it escalates near and at the end, so best thing is to make a decision; what's the goal? If the goal is to emotionally detach from him, grieve the loss of the relationship, process the emotions, and build an awesome future, continued messages from him will get in the way of that, so it might be best to do what you have to do to not get them yes?
Take care of you!