Getting whipsawed is one of a trader's worst nightmares. When a strategy is failing badly, traders will often hedge their risk by establishing an opposing position (called trading the untested side). Doing this adds or increases risk in the opposite direction in exchange for relief on the side. If the share price then reverses direction and causes the untested side to lose money, the trader has been whipsawed.
Had the trader done nothing, they would have made some good money back. But because they added risk to the untested side, now they have lost the ability to make back as much money and might even be losing money. It just adds insult to injury... It's a part of trading and happens to everyone on occasion.