Interesting is it not?
How else could this happen, aside coordinating the drop of this ticker?
One guy calls the next and says 'ok' I'm buying and the other guy put his up below the ask = sold = drop in PPS
I really don't expect to believe this is coincidence, one guy says oh well, guess I'll sell under what it's going for, and at the very same time , another guy says , hmph , I'll try for a specific PPS and lets just see what happens.
Maybe, but doubtful.