For what it’s worth, since this is the same bunch that just declared kneeling for Communion illicit, the 1982 April/May Newsletter of the Bishops’ Committee on the Liturgy says (in part) the following:
“FROM THESE DIRECTIVES, from the NATIONAL CONFERENCE of CATHOLIC BISHOPS, all dancing, (ballet, children’s gesture as dancing, the clown liturgy) are not permitted to be ‘introduced into liturgical celebrations of any kind whatever.'”
Also, although it seems like they can’t quite figure out what they’re trying to say, the Congregation for the Sacraments and Divine Worship said this in Notitiae 11 (1975) 202-205.