Worrying development

The Economist's Lexington columnist, on his blog, has brought to my attention a potentially destructive proposal at the UN.
The idea is to prohibit the "defamation" of religions, specifically of Islam. The article that Lexington quotes from goes on to mention

Such is the domination of the UN HRC by Islamic states, backed by non-democratic
members including Russia and Cuba, that the human rights agency UN Watch
believes the "adoption of the regressive resolution is a foregone conclusion".

If this were to pass, is there some way I could leave the UN? Stop the world, I want to get off.