He is reported as saying this:
"The cult of Captain Tom is a cult of White British Nationalism. I will offer prayers for the repose of his kind and generous soul, but I will not be joining the 'National Clap'."
Now, I think the national clap was daft. But I feel about it like any other national gesture: if it's meaningful to me I participate; if it isn't I don't but allow those who wish to do so to do so without criticism.
So I think this was a particularly graceless gesture from the priest in question. And I think the "cult of white nationalism" comment was inaccurate and inappropriate.