That church is Rhode Island is still having its pagan pride day. You can read about it here, in an article that all but admits what I surmised a few days ago.
From the article, which ironically I found because Robin Edgar was using it as an example of UU awfulness:
In a letter being circulated among members, one critic called the scheduled series of pagan workshops...
This is reporter talk for "You know that controversy we wrote about last week? There's really no there there. It's just one nutjob with a knack for publicity who didn't like the festival and managed to make himself sound like an organized opposition by passing some copies of his rant around and then calling my boss and making me write about his one letter as if it represented an actual controversy. But the story was fun to read, wasn't it?"
Are there humanists who don't like pagans? Sure, and vice versa. But I still maintain that the majority of both groups get along and are minorities within their own churches. I don't get much out of pagan rituals myself, but I don't have to go.
I don't see Paganism as taking over UUism or trying to, despite, yes, the one sermon I attended where a pagan minister preached that this was the plan. (That guy creates a lot of bad blood. If you're a pagan and you know who I'm talking about, you might want to do yourselves a favor and ask him to take it down a notch.)
But in Rhode Island?
It was just one cranky dude who knew how to manipulate local media.