Bump? Am I a slave to Verizon's broadband network?

I've recently noticed that my i760 will tell me it's been connected to the BroadBandAccess network for 15+ hrs... it doesn't "hang up" after sending an MMS message. I pray to God that my bill doesn't come back looking more like Verizon's yearly profit than a typical bill. I need to find a way to only let MMS in/out, and make sure that I'm not using an pay-per-kb usage.

Any help out there?