I fully understand how the various methods of NATing work, I was wondering how NAT was bypassed, it seems from what your saying this is rather unusual situation.

To clarify: I'm not being NATed by a device a control. My ISP is doing the NATing(they don't give out public IPs, rather they use several for the the whole neighborhood) Anyway that nixes any possibility of static forwarding because their are hundreds of other users being nated by the same IP. My guess then is that the router is not very well configured and is allowing forwarding of random source routed address to the internal hosts. Hmm, I gonna have to look into it more.