I didn't read the whole thread because I'm not that interested in the sutta vs sutta approach on this subject, personally. I explained before why I'm not. But I don't see what that has to do with it. Even if Nana says a lot of wise things that doesn't mean the statement above is automatically also correct
But as I've said before I've said practically all I've got to say and from now on it'll probably only go in circles. I think one should be able to support a statement like "this is a definition of wrong samadhi" with some argument, though. Because without arguments the topic becomes even more useless, no matter who's right or wrong.
I just want to add, volitions are without a self and this can be experienced in Jhana. Nothing wrong about that. The Buddha even called it right samadhi.