InfoPath Dev

I am attempting to communicate with a set of stateful web services on SAP and having issues. I can communicate with them, but then attempting to communicate with another non-stateful service results in an "Operation not supported" error. These stateful services are also provided to me in a structured format - I call one main service and a number of services show up to pick from. Anyone ever experienced this issue?

I now understand that a stateful web service will 'lock' me into that service. If I want to terminate a Data Connection (this being a web service) lock, what C# line would I use?