Actually... I think I know why.
3PM PST, Dwolla e-mail me (and probably many people) that the bank deposit has finally been cleared.
I have been waiting for this since Monday.
And it would take only 10-15 min. to deposit that into Mt.Gox today.
Short moment afterwards.... $3 spike
Sadly, I'm not monitoring my mail, and miss the mini-rally.
Bingo! With all the talk that the weekend brings a drop in prices due to ACH transfers not being processed, my thesis is that everyone has staged money for the weekend in order to take advantage of the drop. Therefore, I bought today, just ahead of this weekend's surge.
...only time will tell if my thesis is correct.