Thanks to Adam K. for loaning me a set of O2 eliminators to see if I could force feed a new signal from the O2 sensors into the ECM. I'd read and been told that the ECM will remember the last signal it had from the O2 sensors when you disconnect them and not revert to a default map. If this information is true, it casts some doubt on the reliability of the information I got when I tested the bike with the O2 sensors disconnected. Unfortunately, once the bike warmed up the misfire was still there.
I removed the tail section and ECM which frees the rear part of the harness for a more thorough inspection as I can lift it up and examine the underside. Again no obvious damage anywhere and thoroughly reexamining the connectors and all the wires shows no visible problems. Also good conductivity is present checking all the conductors leading to the various sensors. This latter bit was expected, since the problem only appears under very specific conditions. I'm going to make a test plan and beg Jim to bring his oscilloscope back over for some additional testing. If that fails to lead to a solution I will reassemble the bike and offer it up for sale to someone with more patience or knowledge than me. It's actually pretty rideable on back roads where you're not trying to run a constant 70-75 MPH.
I'm thinking $2000 and there's about $800 worth of Race Tech suspension on the bike. If someone wants to offer that right away I won't even bother Jim again. At this point I want it fixed or gone, since the former seems nearly impossible, I'm leaning toward the latter.