What if Remagen was working for the other side, whether DS or a foreign country? I don’t want to besmirch his good name but that would be a reason for him to suddenly take the eternal dirt nap. If found out or in process of attempting to harm Bolton etc.
Remagen — Did Q do a séance and get in touch with Ken Hechler?
https://en.wikipedia.org/wiki/Ken_Hechler
That is also possible. I hadn't considered it, but I should have.
Well that's good, since you have. If he was and got whacked, the people closest to the situation are on his side. Good place to be until there is proof of something else. A man is dead here, a casualty from the war unseen.