The title is poorly written, I think. Bitcoin did not lose $2K in a single day, the price was going up very fast before the wall, and it has pretty much recovered to the point before the sudden rise as well.
All in all I think such wild swings are expected, we are in a phase of sudden expansive growth and these back and forths should be expected anytime in my opinion.
It definitely didn't lose $2,000 in one day. The price just went to high for a day and just had a correction on that same day but today the price is stabilizing in the $10,000 level.