Of course is a manipulation! We all saw Warren Buffet and even Bill Gates talking about shorting on Bitcoin, which is the way to push for drop levels and now thanks to Goldman Sachs and all other Wall Street players that are coming to the crypto environment they have the legitimate tool to do that.
Traditional investors are seem like the saviors of the crypto market, every time a bank or an investment firm talks about Bitcoin everyone gets excited, but actually these actors have the means and probably agenda to just manipulated the market at their will. I mean, Bitcoin Futures trade on Wall Street! What can go wrong? ... everything.