You are right - that brother sounds absolutely weird! And the way that in other interviews he boasted that he “sang like a canary”, whereas in this interview he says that he stood up well to FBI questioning, is more than slightly loopy.
That bit about he is not sorry his brother is dead is chilling. Like hearing Cain interviewed about Able.
“Like hearing Cain interviewed about Able.”
yes - very disturbing comments from a man who’s just learned of his brother’s death.