I think the goal was to get the stock below 21 so they could pocket off their short positions. The repeated analyst warning, downgrades and "bad mouthing", accomplished that goal. Now they are covering their short positions prior to earnings.
The downward roller coaster ride made all of us so paranoid that any bumps like this feel and look strange. The only question you have to ask yourself is if the stock being valued as appropriate given the sheer size of the company and its capabilities.