From a quick google search, it's telling me that in order to stay at a Lagrange point you would need to be able to produce thrust to maintain your position. I just don't see an explanation or a mechanism for Oord producing it's own thrust.
From Gemini: While L4 and L5 are considered stable points, a spacecraft still needs a propulsion system for occasional small course corrections to counteract perturbations from other celestial bodies and maintain its precise position. L3 is an unstable point, so it requires more frequent and significant propulsion maneuvers to stay in a "halo orbit" around the point.
From me:
The point is especially true for L2 as it is unstable similar to L3 apparently..