I really don't think it is shockwave. I mean, the IP would have to be different in the first place so you couldn't really track it back to him.
As for the ISP, it doesn't change everytime you get on your computer/restart modem. Rogers is a popular ISP in canada. Mine: CPE0013f7ac23f4-CM0013f7ac23f0.cpe.net.cable.rogers.com
Honestly, the only reason I figured it was Shk, was because when I spec'd him in a pub he was using a handscript and doing jumps that most newbies wouldnt know. The fact that it was on castle1 also [since it's not a commonly used map] made it a slight bit suspicious. I mean, shk still idles irc, and asks people to 1v1 offline servers, searches demos to still make videos and stuff, but like looking at it, I don't know if it would be him. I mean, he's as active as shk was, he's pretty good, etc.. but I don't think [unless i'm completely missing something] that the above info is enough in the slightest. But, I guess it's up to jitspoe/committee to look into it.