Swan Dragon's got a lot of power and popularity and Wong is hated by the southern court. Thing is Wong is unlikely to go down without a fight. The question will be how Wong goes about trying to get rid of Swan Dragon.
appointments are by heaven. while Wong has no support among the gods of the south he got the position so i assume he has some support in the celestial bureaucracy. the court of orderly flame is an illegal organization without many friends in heaven. if the swan dragon comes back he may find his political position untenable.
IF Swan Dragon has enough time to recover himself fully and be apprised of the current political climate, being re-appointed Southern censor should be no big deal--half the power players of Yu-Shan think Swan Dragon is still Censor in the South, and Wong his deputy (see CoTD: South).
Now, how he'll react to events of the past seven and a half centuries...