Paul: "You may be inadvertently supporting my lunar-induced Chandler wobble model."
Its not inadvertent. Read back carefully; I have endorsed a definite component of Lunisolar Tidal causality all along, to all these planetary dynamics.
The question is how much influence to assign to each of a long list of factors, that together often act chaotically rather than "straightforwardly". Your strength is in Lunisolar statistics, but there is lot more going on. Its becoming clear that ENSO data noise causes overfitting of virtually all numeric models to date, and incomplete model identification similarly causes pervasive underfitting.
Its kind of nice these rich geophysical dynamics are smarter than we are.