Scott,
If you go to the link that Joe Offer posted, you will see that Loudon has a new CD out. I am pretty familiar with Loudon's recorded repertoire up to this CD and the song you describe is not familiar to me.
That leads me to suspect it may be on this new CD. It also may be unrecorded. Loudon writes and performs many more songs than he finally records.
Sorry I can't help.
Roger in Baltimore