"those IM logs could only have come from the page's computer - the connection between the kid, his parent's, the DNC, and ABC - is yet to be understood"
Actually, there is software available to hack the AOL's AIM, marketed specifically for use by suspicious parents. You can recieve third-party IM's on the computer of your choosing.
This is true!
I have it and I've done it.
And Foley's computer and AOL's server logs as well. It's not impossible for there to be transcripts of IMs. Actually, it's not real hard. And, If Foley did this from behind the firewall at the Capitol Building, or on any other Govt network, it becomes childs play to pull the history on him.