Wouldn't holding services for other denominations be multi-denominational? How is this possible in a NON-denominational organisation? It would open in even larger can of worms. Would the people who are pressing for the inclusion of a mass be comfortable providing space for a witches'coven, a Hindu temple, a Shinto shrine, a Pagan alter, etc, etc. (the list is long) for those of its members who may be of such persuations? I think it was a very wise move being non-denominational. It should be strictly observed. I repeat, an organisation that states in its constitution that it is non-denominational should (actually "must", for it has no other choice) act accordingly.
How can a non-denominational organisation justify holding a mass?

This is not an anti-religeous stance. I have never attacked the church, anyone's beliefs or anyone's right to worship. There's ample provision in the world for people to follow their faiths... Christian or otherwise. It clearly isn't Comhaltas' business to be involved in it or to act demoninationally. Providing a mass is clearly favouring one demonination of one belief over all others. This is simply against its rules... the rules it constituted for itself. This is the simplicity of the situation. It isn't about the rights and wrongs of religions or about power struggles. I don't like to be misrepresented and then have my argument rubbished on the basis of that misrepresentation.

Taking money from organisations that are not allowed to provide funds to organisations involved in promoting religion, or engaging in religious activities, and then organising a mass is very definitely wrong. It is, in fact, fraudulent (and hypocritical as has been pointed out previously in this discussion). I am prepared to give to give them the benefit of the doubt, however, and view them as well intentioned but, simply, misguided... but who is going to tell the priest that he is being involved in such practices?