The nearby Hampton Down circle was moved when the archaeos found the original hole sockets in the field boundary.

Perhaps that's what you're thinking of.

It wouldn't be the first time. There's one on the Treshnish Islands, off the west coast of Scotland, that was found resting in a low wet area by a nineteenth century antiquarian. So he moved the whole thing slightly uphill! As a result, we can never research e.g. alignments there. It's a singular warning against tampering with anything you don't understand - people a century from now will probably want to measure aspects of which we haven't yet got a clue, and we can easily knacker it up for them.