maybe twostars tought he can stop small ddos from bringing down his server....all i know is that he change some of the code or whatever...to handle a higher load as usually.
problem is, that twostars didnt host a server yet with such a high volume of people playing...live experience is harder to handle with than just doing coding and thinking its gonna work out the way you wrote the code
to put it in a nutshell, he is a good coder but lacks live server experience
edit: i know he put a lot server online, but i guess none of them were as populated to ddos them that hard?!