This is the graphic from the imagemap version of the poster Tom Elliott and I put together for the Digital Humanities conference at Stanford University. It's a Frankenstein's monster of a diagram, showing relationships on different planes between Pleiades resources and code and other resources and communities.
By "un-GIS", we mean that our geographic information system compares to industry standard GIS as an unconference like a ThatCamp or WhereCamp compares to AAG or ESRIUC. We're not rejecting principles of geography and cartography at all, but we are reducing formality and complexity and trading other properties of conventional GIS for scalability and flexibility. It went over well at DH11.