This is one of things I like about Bitcoin it can surprise you overnight just like what the price did this week, this is actually the reason why it is advised to keep accumulating for long time holding instead of chasing the Bitcoin price, so just like you said those short holders who buys and sell immediately after seeing a little move on Bitcoin price, I believe they will seriously be regretting why didn't hold.

So perhaps they have learned there lesson about Bitcoin price movement and is not actually late to change your strategy by holding instead of chasing the price.