Is sectarianism as prevalent in golf clubs as it is in working class areas here?

Is religious bigotry as prevalent in Northern Ireland's middle classes as it is in working class areas? At the start of Community Relations Week the Junior Ministers both had a pop at golf clubs in an apparent attempt to suggest that. Jonathan Bell has since apologised saying his remarks were clumsy. So were they 'clumsy' or a true reflection of the problem of sectarianism in Northern Ireland?