A Pinellas County sheriff's deputy defused a potentially dangerous situation involving two marauding pit bulls by luring them into his squad car with dog treats, the sheriff's office said this morning. Deputy Vance Nussbaum, 45, was dispatched to a report in Belleair Beach late last week that the two canines had charged a 65-year-old woman as she was running into her home away from them, clutching her Doberman pincher puppy, the sheriff's office said.