as for this pagan nonsense - it just makes me sick
I've actually seen "good ecumenism." In my old parish, we had a Good Friday service (there is no Mass on Good Friday), in the main church, in which a number of denominations took place. We had Methodists, Episcopalians, Mormons, Baptists, etc. There was nothing in the service with which any group had a theological issue, so it worked.
But, that is the exception, I suppose.