Its been said here many times before, you can be disfellowshipped for anything three elders agree upon.
True. Even more disgusting is the fact one can be DF'd for anything that TWO eldurrs can agree on, because they will browbeat the weakest of the three into submission to their preconcieved agenda. And simply being inactive for a year or more will not be any different to the blank-eyed, slack-jawed, drooling JW drones either. While perhaps not in any official writings, inactive ones are to be treated the same as, if not even worse than, DF'd ones. At least when I was still on friendly terms with some of the higher ups that was what I was told when I started dating a wonderful though inactive woman.