The published exoplanet orbit is not compatible with the observed disk structure. Perhaps the orbit modellers need to redo their optimization with the penalties biassed to two planets in nearly circular orbits. I don't know if the state of the art has advanced greatly, but it used to be the case that there was sometimes ambiguity between, for example, solutions with two planets in low eccentricity orbits and one planet in an eccentric ("loopy" seems to be the media friendly word) orbit.