I don't have any "inside" info like the other insiders around here, but taking a step back and asking the question "why?" leads me to easily conclude this will never happen. AMR doesn't have the money, LCC is toxic and has never found a way to make money (even the west side just managed to scrape by for two decades with a bankruptcy and defacto bankruptcy with the ATSB in its portfolio).
If anything happens between the two companies I suspect it would be an asset transfer. The only problem, it is hard to find an "asset" in anything from USAir.