Sven,
Again, I would suspect: bogus.
The Old Course was built before Flynn did the Cascades course, or RTJ did the Lower Cascades. While I don't have citations at the ready, I remember being back in school at Virginia Tech and reading about it having the oldest first tee in continual use. I think they brought this up in the '88 US Amateur.
But I've never seen anything other than these two sources that would indicate that they backed a truck up, uprooted the tee soil and all, and transported it the what, 45 miles to a new site to maintain its perpetual usage.
I'm just sayin'.....