Of course, it must have been another chapter of Bitcoin self-destructing. In the current case, the activation of Segregated Witness (or better put: SegeREKTed DOOMness). Without going into detail, everyone who took the time to look up what it actually means, knows that it is a complete nightmare. And, not a great AT ALL...
Activation is scheduled for tonight. Massive turbulence must be expected in the coming days/weeks.