I think in the short term a feature request on the VDMX side for support for Vuo UI pop-up buttons would be a good addition. VIDVOX just announced that are waiting for Vuo v2 to get to a stable release and then it will be upgraded in VDMX so we might see changes at that point.
The sketch with the Calculate nodes didn't work for me. But I used the Blend Image with Feedback and set the X and Y inputs Min, Max and Step to -2, 2, 0. I also added a rotate to oscillation/wobble to an X/Y offset: