I've seen those images around. I'm not convinced. I believed the Phase 2 Enterprise never reached the pearlescent paint phase (at least until somebody converted the unfinished model into a smaller version of the TMP refit as seen here: http://www.modelermagic.com/?p=18643
- different but not the one I'm talking about ).
Also if you refer to this page on Drex Files you can see that the one I've spotted looks the right size for the TMP refit model.
I'd say they did a last minute change of the bridge area.