I'm guessing someone spoofed CC2 and Sake's IP's if those really are theirs, it's not that hard to spoof, particularly when it comes to college campuses. Why do I think it's a spoof? CC2 and Sake are not stupid, I'm pretty sure if they *DID* do a DDoS, we wouldn't find their IP in the server logs. (And I'm not saying they did, I'm just stating that they're technical enough to do it)
Someone used those IP's on purpose.
No one besides 4chan and the like would bother to spoof THAT particular IP, because you know they love to cause drama. They also enjoy raiding Vent and our servers in general.
You see, IPs can lie, don't try to tell yourself or anyone else otherwise. But as the article states, there are ways to protect yourself from it. If any if this is applicable in this case? I have no idea!