Over in the sponsor section we have access to tower locations and this is not a sprint site. I believe the Sprint rack is on the other tower (gray antennas) second to top.
I actually found the FCC ID for that site you are talking about and googled it and found this:
"Marin Fettman, 2522 Mondovi Road (A1n0951j) (Lat: 44.792139 Lon: -91.520583), Type: Tower, Structure height: 57.9 m, Overall height: 57.9 m, Licensee ID: L00130191
Registrant: T-Mobile Central LLC (F/K/A Voicestream Pcs I, LLC), 12920 S.E. 38th Street, Bellevue, WA 98006, Phone: (425) 383-4000, Email: marin.fettman@t-mobile.com"