Yup, that was my first post! I've been lurking for a bit, but never had anything to contribute. But now I do (ZIP uploaded with a few pictures of the tower).
I saw what cmill1023 mentioned with the boxes just along the fence and I included a few pictures of those because I figured that could be some of the installation hardware for LTE (some of the boxes on the end did say Ericsson in fact). I tried to get some shots of the top of the tower so hopefully they have enough detail.
The building door had a Verizon Wireless badge but I didn't see any mention of Sprint, though. I'm not one to say for sure, but it didn't seem like progress was really under way.
Let me know if that helps, or if you figure anything out from that.