I've been researching this for a while tonight. Truly, there is no way to disable but, here is a thread that people were discussing disabling it. A Verizon Wireless employee chimed in and confirmed it can not be fully disabled or removed.
However, I did find it interesting that Sync Service can be disabled. I did disable it. So far no ill effects. That should keep it from contacting Verizon and feeding them my information.