I think the initial buyers were retards. If you are buying 1 btc, and there is a 25k wall, you should wait until its almost gone.
Also, I find the amount of people reciting ,"WALL WAS PULLED" "IT WAS FAKE" "ANOTHER 30K WALL INCOMING" "WALL GUY FELL ASLEEP AND GOT F'CKED" very irritating, since none of that is true.
The wall can be pulled at anytime and if its shooting up after like it clearly was it doesnt make much difference when you buy.