It's a trick that played by Wall Street again and again. Look at the headline of the news:
Twitter's shares slump on report that bids are unlikely
Twitter's shares slump on report that potential bidders lose interest
Let's ask ourselves one question, why should any potential bidders lose interest in a week while they had already being plotting it for years?
Why didn't any news about twitter bidders occur before the price spiked?
Why are there so many negative news immediately after twitter crash?