I would say you just find the application add-ins ID, but when I print all app add-ins, the Vault Data Standard does not show up.
Sub test()
Dim addin As ApplicationAddIn
For Each addin In ThisApplication.ApplicationAddIns
Debug.Print (addin.DisplayName)
Debug.Print (addin.ClientId)
Debug.Print ("-----")
Next
End Sub
So I looked in here for the .addin file to find the GUID:


And found it is "{3ad251e3-02dd-4b8c-8882-86c97c80e00c}"
Here's the toggle script. You can create a button either by creating a button for a VBA macro or creating a iLogic rule, (and creating a button for this).
Sub Toggle()
Dim addin As ApplicationAddIn
Set addin = ThisApplication.ApplicationAddIns.ItemById("{3ad251e3-02dd-4b8c-8882-86c97c80e00c}")
If addin.Activated Then
Call addin.Deactivate
Else
Call addin.Activate
End If
End Sub