Another troubling aspect is that Fr. Lundberg is more than likely a member of Opus Dei. His parents do not hide the fact that they are members, Fr. Lundberg went to Christendom College, worked for Vatican Radio, EWTN, Catholic Answers (all Opus Dei connected organizations) and likes to quote Jose Maria Escriva in his "homilies" (I've personally witnessed that).
So the question is why does the SSPX have "good relations" with him? Are they naive, clueless, or complicit? It's disturbing any way you slice it.