I think is wrong to use the term presider instead of priest in a Mass sheet.
According to the Code of Canon Law, Canon 826.2 “For the reprinting in whole or in part of liturgical books as well as their vernacular translation, the ordinary of the place in which they are published must attest that they correspond with the approved edition.” (Code of Canon Law-Latin English Edition, Canon Law Society of America, 1995, ISBN 0-943616-20-4, page 309).
I have not seen the Living With Christ missalette. But by calling it a “missalette” at
livingwithchrist.us/whatis.asp I think is fair to assume that it is intended to reprint part of the Roman Missal.
The approved translation of the Roman Missal, at least in the USA (and I am fairly sure in Canada) has, for example:
“Then the priest joins his hands and says inaudibly:”
So it would be wrong for a bishop to attest that priest=presider and inaudibly=quietly.
Even if people are of the opinion that “celebrant” is a better word because he may be a bishop, they should accept that this is not the currently approved translation of the liturgical book.
I think a good case could be made for using the term “presider” if the leaflet were not to be used for Mass, but for a Word/Communion service or a “Sunday Celebration in the Absence of a Priest”. A lay person would be presiding.
But the Vatican Instruction of 2004, Redemptionis Sacramentum, seems to even disapprove of using the term this way:
“165. … It will be preferable, moreover, when both a Priest and a Deacon are absent, that the various parts be distributed among several faithful rather than having a single lay member of the faithful direct the whole celebration alone. Nor is it ever appropriate to refer to any member of the lay faithful as “presiding” over the celebration.”
Despite this the approved translation for the General Instruction of the Liturgy of the Hours in the USA includes: “258. In the absence of a priest or deacon, the one who presides at the office is only one among equals and does not enter the sanctuary or greet and bless the people.”
It is made clear that the term “presider” is different from “celebrant” in the Ceremonial of Bishops (i.e. Ceremoniale Episcoporum, Liberia Editrice Vaticana, 1995, ISBN 88-209-4217-8). Here Part II, Chapter III describes what a bishop should do at a Mass when he presides but not as celebrant (“DE MISSA CUI EPISCOPUS PRAESIDET QUIN EUCHARISTIAM CELEBRET”).