jOe, I disagree. There have been a number of these partisan attacks which are orchestrated from behind the scenes. There is an unmistakable pattern within them if you pay attention. So long as the attackers think they are scoring points and gaining ground toward their goal of censoring those they dislike, everything is hunky-dory, and the thread may go on for many days. But as soon as enough valid points are made to reveal what is really going on, and to effectively refute the bullshit, they immediately whine and cry to Dave and demand that he pull the plug.
Then after a couple weeks when everyone forgets much of what has been deleted... they launch a new attack. It is as predictable as the sun rising in the east. Just like when a shotgun barrel blows up, there is always a reason, whether it is immediately apparent or not. The real causes here have chosen to remain hidden, like a weak little inclusion within the folds of a Damascus barrel.