I am not quite sure that I understand your scenario. I need to examine your project first and once i have a better view over your case, I will do my best to provide a working solution. You could attach files to support thread and you need to open a new one in order to send your files.
In reference to your question :
There is no property or method that returns a reference to the provider used in the RadFileExplorer
control, but in your scenario I suppose that the desired result can be easily achieve by using the existing features of the control. For this to be done however, I need to examine your setup.
the Telerik team