The explanation is simple. It happens all the time. Nasdaq starts to drop a bit, and some big whales dump tons of TSLA at once to exacerbate the dip. Notice how when this happens it's almost always a straight drop down right as the NASDAQ descends in a not-so-freefally manner?
It just doesn't make me nervous anymore. Only morons would sell right before what will likely be the most monumental day in Tesla's history.
Stop Loss orders are a sure way to lose your shares with TSLA because of these violent moves. Unfortunately less well seasoned TSLA investors might not know this which can create a cascading effect to these manipulations.