A family of Microsoft relational database management systems designed for ease of use.
Too lazy to test, but DoCmd is a method of the Application object, so you might be able to instantiate an instance of the Access Application, use its OpenCurrentDatabase method to point to the back-end and go from there.
Something like:
Dim app As Object
Set app = CreateObject("Access.Application")
app.OpenCurrentDatabase "\SomeServer\SomeShare\SomeFolder\SomeFile.accdb"
app.DoCmd.TransferSpreadsheet ....