I get your point, but...
...if there's a single trade that equals 42% of the ENTIRE DAY'S VOLUME...
...and when it sells, the price goes up...then it's odd. I mean, really. Right?
The bid and ask were so close at that point, and that trade so large, it makes me wonder if it was actually a buy, but the ticker system got confused by the way that the prices fell (that happens a lot).