It's far too early to be writing it off, of course, but AT&T's proposed acquisition of T-Mobile is facing some fairly significant hurdles that could throw a big wrench in the companies' plans -- not the least of which is a lawsuit from the US Department of Justice. Now, according to Blooomberg, AT&T is proactively talking to a number of smaller rivals about selling some of its assets (namely, "spectrum and subscribers") in an effort to save the deal. While talks are described as "preliminary," AT&T h
