It is not a toolbar but an docking window add-in that is a container for toolbars. So you need to unload the add-in, you can always load it again if you need to.
For i = 1 To Application.Addins.Count
If Application.Addins(i).ProgID = "OSIsoft.PB.ToolBarManager.Connect" Then
If Application.Addins(i).connect Then Application.Addins(i).connect = False
Exit For
End If
Next i
Principal Consultant
Real-Time Data Management @ Wipro Technologies