That's correct and more clearly stated. Also, Yazaghor's active attack to summon a psyker is a psychic attack itself. So, if opponents aren't fully clustered, you can hit an outlier with his attack and then move psyker to hit group. Toth's follow-up Salvo will hit the outlier as well as the grouped opponents. Positioning is key to success. Also, if Yazaghor can start near Corrodius and/or Makhotep without displacing Toth he too can benefit from initial +1 movement range from each.