Ever see the movie "Groundhog Day"? (with Bill Murray and Andie MacDowell) Funny as hell and one of my favorites. Anywho, if they subpoena him again, it'll just be more of the same (it'll also be the very definition of insanity). Two things I've come to realize about Bannon: I can't recall anyone being charged with contempt of congress who more richly deserved it.
He TRULY holds congress in contempt. Did you know all he had to do was show up at that clusterfuck of a "hearing" and plead the 5th, and they couldn't touch him? Did you know that HE subpoenaed committee members to testify at his trial? They didn't show up. Is that contempt of Bannon?
The second thing is, Bannon is a fucking honey badger. He loves this shit, and he's willing to go to jail just for the chance to play the game. Remember this from a few years ago? Never wrestle with a pig. You just get all muddy and the pig likes it.