Haejin is doubtlessly BTS best marketer at tis time. There is no doubt that his propagation of BTS' existence makes a big difference, sometimes an immediate one (this is not a bad thing, it might be a very good thing for all concerned).
The comments on your comment are a bit beside the point when they cite "the number of bts in circulation" (what difference does the number of coins as such make) - or that haejin could not have stopped a downward trend - why would he be interested in doing so IF he wanted to influence ? Corrections are always healthy, right ?
Also, the bts retracement went down following the big Bitcoin correction, when even Bitcoin Cash went down - and the BCH crew has surely been manipulating all they could.
When whales pump something, they do it to sell at a high level, and they need that level to come down to buy in again on the cheap, which automatically happens when they sell - I mean, how hard can it be ?
Haejin cannot be expected NOT to use his own predictions for his own benefit just to come over like a copy of Jesus Christ - he has a life, and he must manage his money ;)