If you are asking about changing the offset in 3x3 pixel binning mode, I don't know how to do it. You may be able to find a register that does this with adtg_gui.
However, without heavy postprocessing (super-resolution algorithms), I'm afraid this will only be useful for static scenes (where you can just take a picture).
BTW, if you know how to do that postprocessing, you can simply shoot without a tripod. The camera shake will do pretty much the kind of shifting you are asking for.
