4mastacker,
It wasn't a one-legged landing. The torque link on the port (I think) mainleg had sheared. The leg extended fully and locked down, but the wheel was free to rotate around the vertical axis.
There was much considered debate about whether the leg would fail on landing and whether the pilot should eject. In the event the considered wisdom was that he should land, which he did successfully.
The pilot was Norm Barker and the aircraft returned to flying after a Cat 3 repair.
And yes, Gut was a wonderful place to be in the 70s - the original work hard play hard ethic - happy days!